Hecatoncheire Tartarus

Activate 1 of these effects (but you can only use each effect of "Hecatoncheire Tartarus" once per turn); ● If you control a "Hecatoncheire" monster: Target 1 Spell/Trap your opponent controls; return it to the hand. ● Fusion Summon 1 "Hecatoncheire" Fusion Monster from your Extra Deck, by banishing its materials from your field and/or GY. If you use a face-up monster(s) you control owned by your opponent, you can treat it as a "Hecatoncheire" monster.