Thief of Existence

The exile fires on a cast trigger, which is the timing quirk worth sitting with: the effect stacks the moment you announce the spell, resolves before the body ever touches the battlefield, and lives on the stack independently of the 3/4. Counter the creature and the theft still happens. An opponent who actually wants to save their permanent has to counter the triggered ability itself, not the spell that spawned it, which is a far narrower and more expensive answer to have on hand. The target restriction is where the cost is paid. Only a noncreature, nonland permanent of mana value four or less is fair game, so this is pointed at cheap planeswalkers, problem enchantments, and low-curve artifact engines rather than at removing a threat to close a game. The exile is permanent; you are not borrowing the permanent, you are taking it for good. The drawback is a self-inflicted leave-the-battlefield clause bolted onto the creature: whenever the Eldrazi dies, gets bounced, or blinks, the opponent draws a card. So the theft is clean, but the body becomes a liability that refunds a card the instant it leaves play, which sharpens combat math and makes the creature awkward to blink for value. Devoid strips the color while the green pip keeps it castable off a Golgari-adjacent base, giving the acquisitive Eldrazi color pair a piece of interaction that behaves like removal instead of just another beater.