mtg haunt cards Rules Text: Haunt, 16 cards It drains vitality from those it touches. Magic The Gathering Trading Card

I want my collection to be futureproof

There's lots of ways to make this happen: You haven't provided much in the way of other details about your list, but I'm certain you have some sort of controlling archetypes that can be fueled by the Loam engine

It's actually two cards, that combine to form a single card with the standard M:TG monster, representing you summoning a 99/99 Big Furry Monster that also requires you to pay a frick-ton of black mana, and can only exist if both card sits no the board, because it's such a big furry giant-thing

There are plenty of other mass bounce spells in blue, but very few ways to deal with a convoluted board state, especially in as permanent a way as exiling all creatures like Oversimplify does