Aerie Worshippers
The Inspired mechanic turned on a phase the rest of Magic mostly ignores: untapping. Tapping has always been load-bearing, but the moment a creature straightens back up has historically been dead air, a bookkeeping step nobody built around. This 2/4 asks you to make that step pay, and its trigger fires on any untap event, not just the normal untap step. The natural sequence is offensive: attack, get tapped by combat, then collect a Bird when it untaps at the start of your next turn. That detail matters, because a body sitting home on defense never taps and never triggers at all; the engine only runs when the creature is committing to the board or being untapped by some outside effect. Feed it a repeatable untapper and the trickle becomes a factory. The you sink into each trigger is the governor on the whole thing: the token stream is genuine, but it is taxed every single time, so Birds accrue at the pace of your spare mana rather than for free. What pushes it past a curiosity is the token's type line. The flying Birds it makes are enchantment creatures, which quietly feeds anything that cares about enchantments entering or leaving, layering a second axis onto what reads as a plain token-maker. The design lives in the gap between a durable front half and a slow, repeatable back half that only pays out when you send the creature into harm's way.
