World Breaker

The disruption is a cast trigger, and that is the whole reason to run this over a plainer green fatty. Casting the spell puts a triggered ability on the stack that, when it resolves, exiles an artifact, enchantment, or land: crucially, that trigger is a separate object from the creature itself. Counter the 5/7 and the exile still resolves, because the two are decoupled the moment you announce the spell; a single answer aimed at the body does not undo the permanent you removed. Opponents have to spend twice, once on the trigger and once on the creature, to break even. That pushes the colorless reach body toward incidental, its real job being permanent removal with a 5/7 attached. The graveyard clause closes the loop: pay the colorless, sacrifice a land you are done with, and the whole package returns to hand for another exile trigger. The land sacrifice is the tax that keeps the engine from running away, since each rebuy eats a piece of your own manabase; the recursion cannot loop indefinitely without hollowing out the deck that supports it. It sits in the lineage of green creatures that smuggle disruption onto a body (Acidic Slime is the obvious cousin), but Devoid strips the color away, so it casts on green mana while resolving as a colorless permanent that shrugs off color-hate. The exile rider plus the return clause carries it past pure value into a recurring lock against the right permanents.