Immobilizer Eldrazi
The activated ability is the whole reason this exists, and it reads like a riddle until you parse the body types it punishes: anything with toughness greater than power is, by definition, a wall, a chump-blocking defender, a fattened-up roadblock built to stop attacks rather than make them. For two generic and one colorless, this Drone strips those defenders of the right to block, turning the classic ground-stall answer (drop a 0/4, a 1/5, a hexproof brick) into dead weight. It is a colorless aggressive enabler, which is the unusual part: red gets evasion-granting effects all the time, but most of them care about the attacker's stats, not the blocker's. This one inverts the lens, asking what the opponent is holding back rather than what you are pushing forward, and it punishes a specific defensive deckbuilding instinct rather than a creature type or color. Demanding in the activation cost anchors it to the rest of its tribe's mana ecosystem, rewarding decks that produce colorless as a resource and giving the ability a natural home alongside other devoid bodies. The 2/1 frame is the tell: this is a curve creature that wants to swing every turn, and the ability is the lever that keeps the red zone open once the board clogs with toughness-heavy blockers.
