mtg exert cards 1x Influence | Battle for Zendikar | Magic Converge — Gain control of target creature if its power is less than or equal to the number of colors of mana spent to cast Exert Influence. Themberchaud | Secret Lair |

Other colors also give you access to Proliferate effects, like Evolution Sage, which can help you rack up study counters even faster

The exiled card gains The player who controls the permanent that exiled this card may look at this card in the exile zone.'" (6/6/2025) Any player who has controlled a permanent with a hideaway ability since a card was exiled with it may look at that card

A few people will build wacky casual Contraption decks, but these things dont mesh well with black-bordered play, nor do they look like new Cube staples

It allows you to put a +1 Counter on any creature whenever you gain life, as well as granting the ability to give a creature Lifelink for one generic and one White Mana