Two of the unique aspects of the Yu-Gi-Oh! Goat Format are the ubiquity of the card Metamorphosis and the fact that there is no legal limit on number of cards that you can play in the fusion deck (Yu-Gi-Oh! changed the term “fusion deck” to “extra deck” in 2008). Thus, making sure that you have included the correct fusion monsters in your fusion deck is an essential element of building any deck that includes Metamorphosis. Sorted below by level, we have listed every fusion monster that is a viable choice in Goat Format.
Level 1 Goat Format Fusions
Thousand-Eyes Restrict: This is most frequent and most powerful fusion monster special summoned with Metamorphosis. It can take the opponent’s best monster while locking down the field at the same time. It is infamous for its powerful synergy with Tsukuyomi, which allows it to steal a new monster each turn by repeatedly flipping it down and up.
Level 2 Goat Format Fusions
Surprisingly enough, there are no level 2 fusions in Goat Format. This prevents you from doing plays like using Metamorphosis on your Morphing Jar or an Ojama Trio token to get it off of the field.
Level 3 Goat Format Fusions
Dragoness the Wicked Knight: Of the level 3 fusion monsters in the format, this one has the highest attack and defense. Any deck with both Metamorphosis and Sangan will need access to this fusion monster every once in awhile.
Flame Ghost: Although it has less attack and defense than Dragoness the Wicked Knight, it has the advantage of being a dark monster. In a chaos deck that includes Metamorphosis, it might be possible that will want to special summon Flame Ghost for its attribute.
Level 4 Goat Format Fusions
Darkfire Dragon: Among level 4 fusions, it has the highest defense and is tied for the highest attack. It is also dark type. This is the only level 4 fusion monster that you’ll need. Be sure to have it, because using Metamorphosis on a level 4 monster is more common than you might think.
Level 5 Goat Format Fusions
Dark Balter the Terrible: After Thousand-Eyes Restrict, this is the most commonly usedfusion monster brought forth with Metamorphosis. This is for good reason; the potential to negate both spells and monster effects is quite powerful. It’s even dark, which means that it has synergy with chaos monsters. Decks like Reasoning Gate Combo and Empty Jar can be completely shutdown by a Dark Balter the Terrible, so don’t forget about it.
Fiend Skull Dragon: Its effect is overall worse than Dark Balter the Terrible’s, but it still has its uses. It’s particularly good against flip control, which plays a high quantity of both flip effect monsters and targeting traps. If you have the hard read an a set Sakuretsu Armor, you’re going to want a Fiend Skull Dragon.
Reaper on the Nightmare: This is mostly used in the rare situations where you control a level 5 monster that is not Airknight Parshath (such as Thunder Dragon) and need to use Metamorphosis in order to push through the last bit of damage to close out a game. Being able to function as a wall for your own lifepoints is not used as much, although it’s a welcome bonus.
Giltia the D. Knight: It has no effect and mediocre stats, but it is a light monster. In the rare situations where you have Snatch Steal for your opponent’s Airknight Parshath and need to Metamorphosis for a light monster in your graveyard for a chaos monster, Giltia the D. Knight could be the difference between winning and losing the game.
Level 6 Goat Format Fusions
Ryu Senshi: This is the most commonly used level 6 fusion monster, and it mostly used for setting up kill turns via Chaos Sorcerer+Metamorphosis. It stops Mirror Force, Torrential Tribute, Ring of Destruction, and they can’t even Snatch Steal or Book of Moon it. Just watch out for Scapegoat.
Dark Blade the Dragon Knight: With chaos mirror matches being more frequent than they use to be, this card is becoming increasingly relevant. The ability to banish 3 monsters from the opponent’s graveyard can totally shutdown an opposing chaos player. It’s also tie for the highest attack of the available level 6 Metamorphosis targets.
Ojama King: Another interesting fact about Goat Format is that it’s not unheard of for games to end via a natural deckout. Ojama King can be used after the opponent activates Scapegoat to ensure that they have no monster zones remaining. It has has 3000 defense, which is the highest of the available fusions.
Dark Flare Knight: We can’t think of too many situations where you’d need to use this guy’s effect, but never say never. A 2200-attack monster that prevents damage might be what you need.
Roaring Ocean Snake: With mediocre stats and no effect, this fusion monster seems useless. However, it is an aqua-type, which means that Tribe-Infecting Virus cannot destroy it without also destroying itself. If you know your opponent’s last card in hand is that Tribe-Infecting Virus, then Roaring Ocean Snake might be useful.
Level 7 Goat Format Fusions
King Dragun: A 2400-attack monster that cannot be targeted is pretty respectful. If you do manage to have a level 7 monster and a Metamorphosis, King Dragun will usually be your strongest option.
The Last Warrior from Another Planet: Against some decks in the format, saying no to all summons could be back-breaking. This is particularly true if the opponent’s deck doesn't set monsters very much. This is just another option for the rare cases that you control a level 7 monster and a Metamorphosis.
Twin-Headed Thunder Dragon: This has the highest attack of any level 7 fusion in Goat Format. I suppose you could also summon it via Thunder Dragon’s effect and Fusion Gate, but I wouldn’t recommend going that route.
Level 8 Goat Format Fusions
Gatling Dragon: This is the only playable level 8 fusion, but thankfully it has a good effect. Using Metamorphosis on Black Luster Soldier - Envoy of the Beginning to special summon a Gatling Dragon is a common way to set up kill turns in Goat Format. Sometimes you just have to hope to flip a heads or two.
Level 9 Goat Format Fusions
Master of Oz: With 4200 attack and 3700 defense, this has the best stats of any fusion monster in Goat Format. You won’t be summoning it with Metamorphosis too often, but it is a common Cyber-Stein target for the few decks that play it.
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