Krosan Avenger

Threshold is a mechanic that pays you back for filling your own graveyard, and this is the design at its most literal: a fragile 3/1 with trample that starts as a liability and graduates, once seven cards pile up, into a creature that regenerates cheaply and keeps swinging through chump blockers. The build is a power curve baked into a single card, with the toughness deliberately left at 1 so the early game stays honest. Before threshold flips, a stiff breeze kills it; after, it shrugs off blocks and burn alike and trample punishes anything that tries to bottleneck it in combat. The design tension this kind of early-era graveyard-count card had to resolve was how to make a self-mill payoff matter without warping anything: a creature that is a soft target for the first several turns and an attrition engine afterward answers it cleanly. You do not assemble threshold for this card so much as let your normal grind earn it, and the body switching from a glass-cannon attacker to one that walks back from removal is the entire arc compressed into a single line of text. It is the unglamorous workhorse version of the mechanic, the one that rewards a deck for doing what it was already doing rather than asking it to contort around the count.