Salt Road Ambushers
Morph and its descendants all share one quiet timing window: the moment a permanent turns face up. This card stakes the whole creature on watching that window. Whenever another creature you control flips up, it lands with two +1/+1 counters, and the trigger does not care which mechanic did the flipping. A face-up megamorph already brings its own counter; an ordinary morph unflip brings none on its own; either way, this Dog Warrior tacks two more onto whatever just revealed, turning a routine 2/2-to-3/3 reveal into a 5/5 swing in a single trigger. The 3/3 body is incidental: the value lives entirely in the counters it manufactures off other permanents, which rewards a board stuffed with held-back face-down creatures waiting to flip on one explosive turn. Two restrictions shape it. First, the trigger reads "another permanent," so it never pays itself for its own megamorph; this is not a self-contained loop but a payoff that needs a crowd. Second, it only cares about creatures turning face up, so a flipped noncreature permanent gets nothing. The critical wrinkle is positional: a face-down creature has no abilities, so this must already be on the battlefield face up to do any of this. That makes the sequencing a genuine puzzle, since the engine has to land and survive before the flips it rewards can begin.

