Magistus Chorozo

1 Fusion, Synchro, Xyz, or Link Monster + 1 Spellcaster monster
Must first be either Fusion Summoned, or Special Summoned (from your Extra Deck) by sending 1 Fusion, Synchro, Xyz, or Link Monster Card and 1 Spellcaster Monster Card you control to the GY. Once per turn, when a monster declares an attack: You can target it; negate the attack, and if you do, this card gains ATK equal to that monster's (until the end of this turn), then you can return that monster to the hand.