Vengeful Warchief

The trigger reads as passive but the reward structure is deliberately active: this Warrior grows only when you take life loss, and only the first instance per turn counts, so the counter accrues on a schedule you have to build toward rather than one that ticks up on its own. The parenthetical does the load-bearing work, folding combat damage into the same bucket as fetch lands, painlands, life-payment spells, and any black card that asks you to bleed for value. That reframes a 4/4 body into a payoff piece for a deck that was already going to lose life anyway: every shockland crack and every hit from an opposing attacker becomes a stat point instead of a cost you would rather avoid. Note the timing discipline: because the counter lands on the first life loss each turn, sequencing a fetch before combat wastes nothing, but stacking multiple painful choices in one turn only banks a single counter, which quietly caps the engine and keeps it honest against decks that would otherwise nova their own life total to size it up. It sits in a small lineage of creatures that convert self-inflicted damage into growth, rewarding a build committed to treating life as a resource to spend rather than a total to protect.