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You can play it in lifegain decks in Modern too

If a monster in this card's adjacent zone is destroyed by your opponent's attack or card effect: Destroy this card, and if you do, take 2000 damage, then inflict 2000 damage to your opponent

Special Summon this card, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except DARK Dragon Synchro Monsters

So many cards come with ETBs these days, and looping them is key

Many of them are transform cards or tokens

This frees up space in your decks to run a wider variety of spells, since you can count on tutoring up whatever the situation calls for