If you have these 3 cards in your starting hand, it's the best hand to start the game.

Android 20 will be used to defend you, and having an android in your drop will increase your energies.

Krilin will help you get destructive strength if you don't already have it. If you don't, you can advance by picking up an android 18. Krilin also allows you to attack and temporize in the face of critical blows: you'll attack, then your opponent will generally defend, and on his turn he'll want to redirect his attacks onto him, which allows you to defend your leader from an attack.

Destructive Strength on turn 3, you either save the remaining energy for gigantic meteor, or use it to draw, and have a 5k to defend.

At a glance the Goku leader looks much stronger then the Bardock, and although that is true there is one massive difference between the 2 leaders, Bardock is able to do its abilities for free while Goku must always spend 1 energy to do so and with how fusion world plays out, you are most likely using your energy to do other things throughout the course of your turn that using your leader skill will hinder what you are able to do.

Whereas Bardock will be able to attack your opponent’s leader every turn for 25000 power, which allows him to naturally attack into bigger bodies or demand a 10000 combo card from your opponent on defence. And that’s not the only part, the active battle on him is also Deceptive, a lot of people think you are force to run more of the Bardocks Crew Arctype to synergise with this ability where it is not the case. The Ability to use this on a battle card swing to see the next card you will draw into is huge, if the card is something you do not want, you can place it at the bottom of your deck and draw into something else. This extra layer of filtering was what led us to our success over the weekend as we were playing a more successful deck.

What’s more, we do still run some Bardocks Crew cards in the deck, so if we are lucky and hit the 10k Combo Borgos we run, we get a FREE 10k boost in power on any of our cards attacks, which is the same power that the Goku Leader Provides.

Zamasu’s deck type is pure control: once the leader is awakened, he becomes a 25k, and like all 25k leaders, he loses the ability to draw cards. However, thanks to some cards introduced in FB03, like Son Goten or Videl, this issue is almost entirely resolved. In fact, these cards allow you to reach the late game with an incredible advantage compared to most other decks.

Typically, I tend to drop to 3 life points as late as possible, around 6-7 energy, before starting to play cost 6 cards like Zen-Oh to completely reset the opponent's board, followed by Goku Black to apply pressure and recover important cards from the drop.

Now, let's look at the pros and cons:

Pros

• Being a base 25k once awakened allows you to block your opponent’s 30k attacks (which are quite common in this meta) with just one card. It makes it difficult for opposing leaders to attack you directly, as they would need to invest resources. Consequently, it’s also harder to defend against when you attack.
  
• The leader’s skill in the late game gives you the option to absorb the opponent’s last attack, or their biggest attack, and then recover that life in the next turn simply by investing one energy and a card from your hand. Energy in the late game will never be a problem, and cards can be easily recovered from the drop. Your opponent will need to continually invest resources to try to deal damage while also dealing with an increasingly dangerous board that generates cards and combo value constantly. Meanwhile, you can safely chip away at the opposing leader’s life, one point at a time. To secure the win, your opponent would need to eliminate 3 life points in a single turn; otherwise, you’ll keep recovering them.
  
• Blue is generally limited by the 7-card hand limit, so it has many ways to recover cards from the drop. By prolonging the match as long as possible and relying on small recovery plays and board control rather than always playing the biggest card in your hand, as many other decks do, you’ll maintain card advantage and put your opponent in a difficult position as they will have fewer and fewer cards each turn.

Cons

• I believe the worst matchup for Zamasu is Android. It’s not impossible to win, but it is quite challenging. Fortunately, Android is almost a free win for Jiren, so there are fewer of them than before. Other green leaders, however, are quite manageable.

Pros:
1. 25k Base
Sitting on the base, allows you to require a reduction in combo power, resulting in less resources to defend, and it also grants you a slightly more offensive power in pressuring. Opponents' Leader would require additional combo resources from their hand or board to touch you. 

2. Interaction with 4 Cost Jiren
As mentioned, the interaction with 4 cost Jiren is extremely powerful, especially against decks that are not Blue. The card is sticky, and provides a strong 30k body which allows you to push hard into your opponents. 4c Jiren allows you to trigger your leader’s ability, allowing you to draw during your opponents turn. Most important interaction is that as you only choose to trigger 4 cost Jiren’s effect after entering battle phase, due to the awakened leader’s ability, it allows you to negate the attack, as you have already taken damage from 4 cost Jiren. This sick interaction provides an immense value especially if your opponents cannot clear it!

Cons:
1. Inability to Draw once awakened
The inability to draw once awakened similar to Broly when attacking is a disadvantage for the deck. However, with a 25k base, of course the deck has to receive some shortfalls if not it’ll be way too broken.

2. Over Reliance on 4 Cost Jiren
To add on to point 1, you essentially are not drawing once you are awakened, so the deck requires a strong emphasis on having 4 Cost Jiren stick. Against decks that can comfortably remove your Jiren such as Blue, you would definitely have a hard time.

Key Cards:
These key cards mentioned are in no particular level of importance, but rather crucial to your game plan

1. Jiren
Jiren is a 4 cost 30k body which is extremely strong due to its sticky nature. It heavily benefits Jiren leader due its ability to enable you to trigger your leader’s ability, in letting you draw 2 cards during your opponent turns. It also trigger Jiren’s ability in Negating an attack, especially useful against Big Attackers such as Broly!

2. Double Break Goku FS01-08
The 5 Cost double break goku is essentially your winning condition, as well as your trump card! It provides a powerful -20k, but most importantly its Double break! This card is also an edge in the Mirror matchup, as if your opponent only has 1 30k and above body on their field, you can -20k to that unit, and shutting off their Jiren’s ability

3. Marcarita FB03-022
Marcarita is a really strong push cards that helps buff up your 5 Cost Goku during your push turn! It increased you ultimate power output, and it has won me a lot of games both in pushing my opponent to 2 life, as well as finishing them off!

4. 2 Cost Caulifla FB02-007
This card enables you to rush awaken, which is crucial for Jiren in most matchups. The critical ability is especially important in putting in the early game pressure for decks such as Android which is another one of the strongest deck in the meta.

Your game plan for Black is very simple: You want to play your 4 drop as soon as possible. This card is insanely overtuned, and if you can stick it for a single turn, the game snowballs out of control. For this reason, it is important to pair 4c Goku with 10x Kamehameha to clear cards that pose a threat to him (Pan and Vegito for example). If you can do this, you can back to back 4c Goku, which gives you a free 2 energy and 2 cards every turn, which is completely insane.

Into the mirror, the key cards are Pan, Kakarot, 4c Goku, 10x Kamehameha, and 5c Bardock. Pan allows us to bounce the opponent’s 4c Goku, so if you can set it up on turn 3, you can bounce your Opponent’s Goku while developing your own. The deck struggles to deal with a 2 and a 4 on the same turn, so this spot will generally win you the mirror match. Make sure to KO your opponent’s 3c Bardocks and Pans with 10x Kamehameha before they get out of control. Kakarot allows us to win after losing the dice roll, allowing us to play 4c Goku on t3 going first. The hand disadvantage is worth it, as the person who can stick this card first generally wins the game. Lastly, the only answer we have to 5c bardock is our own, so if you can 5c gap your opponent, you will also be in a commanding position.

Versus blue, the same cards are extremely important. 10c Kamehameha allows you to clear the Opponent’s Vegito, which means they cannot use the 4c Gohan to bottom deck 2 of your 4c Gokus. On top of this, Giru is amazing as it allows you to KO Hercule and Sharpner into Haloku, which reduces their combo potential significantly. Versus red, as stated at the start of the guide, make sure to boost up your key targets with your leader ability plus energy marker. Pushing your Pan and 4c Goku out of range of your opponent’s abilities will stop them from being easy to trade into and stop your opponent from KOing your board, which means you will always be one step ahead. When in doubt and versus anything else, just turbo out 4c Goku, gain extra effects from the energy marker, and you will snowball out of control!

General Mulligan criteria:

Very simple.
Going first: Whis, Caulifla/Hit, Goku SSB/ Gohan, Katopesla
Going 2^nd: Caulifla/Hit, Katopesla, Goku SSB/ Rumsshi

Matchup specifics:

VS Bardock FS05:

Choice: Going 1^st  

Black in DBSCG is really interesting, they have the ability like other colours (stun,ramp,bounce etc). Prefer going 2^nd with the same mulligan. Try to look for Caulifla so you can go Crits Aggro. Make sure to control their board and force them to use most of the source in their hand. Also when the leader awaken, it can combo with their top deck if the card is <Bardock’s Crew> and it is extremely painful so we want to avoid that by removing source that help them interact with the top deck. When we reach 5 energy, if opponent hand size is low, consider dropping 5 cost Goku double attack to win the game. 

VS Green Gohan FB01-071:

Choice: Going 2^nd 

Against Gohan try to look for Hit/ SSB Goku/ Rumsshi in your starting hand just in case they play big body since they can ramp energy faster. During my match I have to really control my opponent board especially when they drop the new Son Gohan: Youth SCR FB03-139, need to prevent them using it ability to gain +20K power during their turn if have 8 or more energy and ramping when attacking.  

VS Green Android 17/18 FB01-070:

Choice: Going 2^nd 

Usually in this matchup, you must win within the first 7 turn. Prefer going 2^nd with the same mulligan. Try to look for Caulifla so you can go for turn 1 Caulifla, turn 2 Caulifla and swing with multi Crits pressuring them. Do make them stuck at 5 life for 1 turn if their energy will reach 6 the following turn as their 15K base power would need extra effort to touch your battle cards with 20K power base. Try to control their board preventing them to set up. Caulifa/ SSB Goku/ Katopesla/ Rumsshi is the core cards when it’s come facing up Android 17/18. They help you aggro/control while setting up your board.  

General Mulligan criteria:

Very simple.
Going first: whiz, hit, Blue SR Goku/ SR Gohan
Going 2^nd: 2 hit, Blue SR Goku/ SR Gohan

Matchup specifics: