Desolation Prowler

A two-mana creature that can attack or block as a 4/4 is testable, but repeated two-life payments and no evasion or value leave no clear current shell.

Could be wrong if A successful black aggressive or life-payment deck could make its rate substantially more valuable than expected.

Pioneer demands more than an optional 4/4 body: it is vulnerable to efficient removal and its life cost is severe against aggressive decks.

Could be wrong if A black creature-curve deck that wants oversized early attackers could give it a narrow recurring role.

An unprotected two-drop with no immediate value is a poor fit for Modern's speed and removal; paying life for combat stats is not distinctive enough.

Could be wrong if An efficient life-payment payoff or unusually resilient black aggro shell could create a niche.

Legacy's creature threats generally need exceptional efficiency, disruption, evasion, or engine value; a pumpable 2/2 supplies none of those reliably.

Could be wrong if A new black tempo shell could value a cheap 4/4, though the lack of disruption remains a major hurdle.

Even with 40 life, a self-pumping 4/4 lacks evasion, cards, mana, or multiplayer utility, making it highly replaceable in optimized lists.

Could be wrong if A commander specifically rewarding life payments or repeated creature combat could provide a niche home.

It can represent a 4/4 in combat from turn two, dominating smaller creatures; the two-life cost and ordinary removal keep it below bomb status.

Could be wrong if Unknown format speed, removal efficiency, and combat sizing could make the life payments either trivial or prohibitive.