Combine any of these cards with "Xyz Override" to be able to reliably use this effect during each of your opponent's turns and mess up their Summons, all while the effect of "Ragnazero" refreshes your hand.
This card works well against "Fire Fist" Decks, since all but one "Fire Formation" card change the ATK of their Beast-Warrior-Type monsters.
This card also works well against other Decks that use "Fire Formation" cards.
By using "Gagaga Magician" and "Gagaga Girl" to Xyz Summon this card, the effect of "Girl" can potentially be used to alter the ATK of an opponent's monster, allowing yourself to activate this card's effect.
This card works extremely well with "Number 94: Crystalzero": each monster's effect can be used once during each player's turn to remove 2 opponent's monsters and draw 2 cards.