Kang Prime
Suspend has always been a bargain struck up front: you pay early, wait, and cash in for free later. This warps the exchange by handing the mechanic to cards that were never designed to carry it. The trigger digs until it hits the first nonland card, drops two time counters on it, and grants suspend if it lacks the keyword, which means a bomb, a wrath, a game-ending spell that would ordinarily cost a full turn resolves in two upkeeps for zero mana. The tax is the delay itself: two time counters is a two-turn wait you can neither shorten nor redirect, and the exile hits blind, so you take whatever the deck hands you. But the attack half triggers on declaring an attacker rather than on connecting, so the mere act of swinging each turn feeds the queue and starts a compounding line of free spells landing a couple of turns out. A 3/5 flyer suits that plan: evasive enough to keep attacking into open boards, sturdy enough to survive the removal it invites and the blocks it wants to make. Structurally this is a repeatable free-cast engine wearing a delay as its only cost, and that delay is the entire balancing act: the reward is never immediate, only inevitable. Building an engine around inevitability rather than speed is a very different kind of pressure to apply.

