Mightform Harmonizer

Doubling power rather than toughness is the whole tension of this design: the landfall trigger turns a body into a burst attacker, not a burst blocker. A 4/4 becomes an 8/4 the instant a land enters, oversized enough to end a race but still fragile enough that the extra size only matters when it is swinging. That asymmetry is what keeps a repeatable pump effect from warping combat math the way a symmetric +X/+X would. And the trigger keys off landfall for a reason: fetchlands and instant-speed ramp let you crack a land mid-combat, so the doubling can land after blockers are declared, effectively a combat trick that dodges the sorcery-speed ceiling most pump payoffs live under.

Warp reshapes when the Harmonizer gets to work rather than what it does. Deploy it for two-and-a-green, bank a landfall doubling that same turn, then let it exile itself and recast it later at full cost as a permanent. That splits a four-mana creature into two plays: a cheap early swing that survives to redeploy without committing the whole cost up front. Warp also answers the classic weakness of one-shot pump engines, which is eating removal before a land drop pays off. Extract the value, tuck the creature into exile where sorcery-speed answers cannot reach it, and bring it back when the board is ready to convert its power into a kill.