Yu-Gi-Oh!: The 10 Most Powerful Xyz Monsters

With Yu-Gi-Oh! 5D’s on the way out and a new series on the way in, Konami felt the need to introduce a new summoning type. Enter: Xyz monsters. While Synchro monsters required players to have the right balance of tuners and non-tuners to work properly, Xyz decks weren’t nearly so complicated.

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To Xyz Summon, all players needed were two monsters of the same level. By putting one (or more0 on top of the other, they could summon Xyz monsters. This was meant to slow the game down by creating monsters which had to detach the monsters under it to use their effects. But power creep eventually hits everything, and eventually Xyz were as bad as Synchros...or worse. This list is going to look at ten of the most powerful Xyz monsters Konami ever printed.

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The Constellars as a deck were a group of monsters with decent effects that never quite hung together enough to be viable. But their boss monsters were incredible. Ptolemy M7 was meant to be the big boss of the deck, and it’s effect allowed it to detach one material from itself to target a monster on the field or in either player’s graveyard and return it to the hand.

It took two level six monsters to make, though it could also be formed by using another Constellar Xyz as material, meaning the deck itself had tons of ways to get this monster out.


Towards the end of the Xyz era, Konami stopped even pretending like they were releasing balanced cards. Beatrice normally required two level 6 monsters, but could also use the deck’s original boss Xyz Dante by sending a Burning Abyss monster from the hand to the graveyard (which would also gain its effects). Once per turn, it had the quick effect ability of detaching a material to send a card from the deck to the graveyard.

As if that wasn’t bad enough, when this card was destroyed, it could special summon any Burning Abyss monster from the Extra Deck, ignoring it’s summoning conditions. While the OCG rarely did much with the deck, it’s popularity in the TCG led to this card being limited to a single copy.


A handful of decks from the Synchro era were lucky enough to also attain some Xyz monsters, and X-Sabers were one of them. M-X-Saber Invoker required two level 3 monsters, and once per turn a player could detach a material to special summon a level 4 Earth Warrior or Beast-Warrior directly from their deck in Defense position.

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The utility this monster had with respect to allowing players to pick what card they wanted to summon to the field opened up plays for a ton of combos especially in the Zoodiac Era, and eventually resulted in this monster being banned both in the East and the West.


Yuma’s Number 39: Utopia monster was a decent card to start off a new series (and summoning type) with, but to be honest when the Xyz began they didn’t set the world on fire. Cards like Utopia, Leviathan Dragon, and Gachi Gachi Gantetsu gave decks options, but weren’t by any means “broken” or “overpowered”.

But Konami eventually gave in to their desire to create cards in that vein, and one of the many cards that came from that was Utopia the Lightning. Though it could be created with two-level 5s, a simpler way was to overlay it onto basic Utopia. Then, by detaching two materials Lightning’s attack could become 5000, bringing a swift end to a bunch of duels.


What can’t this card do? Though it requires three level 12 monsters, within its own deck there are far easier ways to summon it. Worse yet, the card gains effects based on how many monsters were used to summon it. At two materials, once during either player’s turn it can shuffle a card from the field back into the deck.

At four materials, it’s unaffected by card effects other than Super Quant cards. And at six materials, the opponent can’t add cards to their hand except by drawing. All this attached to a 3600 ATK monster, and it’s fortunate this deck never quite got the support it needed to go meta.


The Mecha Phantom Beast deck was pretty terrible when it was released, one of the few Elemental decks from the Xyz era that was unfortunate enough to have that happen, as the others—Geargia, Mermail, and Fire Fist—would go on to be pretty awesome. But they did get Dracossack, a Rank 7 Xyz that could detach a material to summon two Mecha Phantom Beast tokens.

While the player controlled the tokens, Dracossack couldn’t be destroyed by battle or card effect. And it could tribute Mecha Phantom Beast monsters to target a card and destroy it. This card became another staple in Rank 7 decks alongside Big Eye, giving players the ability to steal or destroy monsters as they pleased.


On the one hand, it’s cool that Konami created so many monsters that could easily use their “multiple materials” effects. On the other, if that’s the case why make those effects so powerful? Rhongomyniad required two or more Warrior monsters. For every monster it had, it gained more effects. With one it couldn’t be destroyed by battle. Two, it gained 1500 ATK and DEF.

Three, it was unaffected by card effects. Four, the opponent couldn’t normal or special summon monsters. Five, it could destroy all the opponent’s cards. It had to detach a monster during the opponent’s end phase every turn, but honestly if it got all five effects the player who summoned it was going to win anyway.


When this card was made, everyone realized how great it was, but it wasn’t quite an auto-include because it required three level 4 monsters. At the time, this wasn’t exactly easy to summon, so Konami left it alone for a while. But as Rank 4 Xyz plays became easier and easier, Konami was left with no choice but to ban this card.

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And why not? Once per turn, Shock Master could detach a material from itself, then declare monster, spell, or trap, and that type of card could no longer activate its effects until the end of the opponent’s next turn. For especially gifted decks, this meant shutting the opponent out of their entire turn.


Of course as Xyz monsters require bigger monsters, they get more obscene effects. Number 11: Big Eye was one of those cards that had an amazing effect but was impossible to summon.

By overlaying two level 7 monsters, players got a boss monster with 2600 ATK and the ability to detach a material and target an opponent’s monster, then steal it. Unlike most “take your opponent’s monster” cards, Big Eye’s effect is permanent. It flew under the radar for a time, then decks released which could summon multiple level 7s with ease, and the cost of the card skyrocketed.


One would think a card requiring 3 level 9 monsters would be more difficult to summon. But thanks to a clause that allowed this card to be summoned by using any Galaxy-Eyes Xyz as material, that wasn’t an issue.

Dark Matter allowed players to send 3 Dragon-type monsters with different names from their deck to the graveyard to force their opponent to banish 3 cards from their own deck. In addition to weakening the opponent’s deck and loading up the player’s own graveyard though, it also had 4000 ATK and could detach a card to attack twice. This card was forbidden on both sides of the ocean, and it’ll likely stay that way.

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