Elemental HERO Gaia
Ⓢ Must be Fusion Summoned.
① If Fusion Summoned: Target 1 face-up monster your opponent controls;
until the End Phase, its ATK is halved and this card gains ATK equal to the ATK it lost this way.
● This card can only be Special Summoned by Fusion Summon. It can't be summoned by card effects.
● This card's effect applies until the End Phase (and not for the entire turn).