Scourge Wolf

First strike on a two-drop is a defensive keyword wearing an aggressive coat: it lets a small body win exchanges its toughness could not survive, killing an equal-sized attacker or blocker before that creature swings back. A 2/2 with first strike beats another 2/2 clean, but the math has hard edges: it deals its two, fails to finish a 2/3, then dies to the return damage all the same, and it bounces harmlessly off a 3/3 or a 0/4. Delirium is where the card changes jobs entirely. Once four card types sit in the graveyard, the promotion to double strike adds nothing to survival (the native first strike already covers the combat step) and everything to output: a full second helping of damage on the same swing, and a multiplier on whatever a pump spell or anthem stacks on top. That is the design tension in miniature. Red aggro wants to dump its hand and race, but the payoff wants a spread of types in the bin first (an instant, a sorcery, an artifact or enchantment, a land that died along the way). The condition is the throttle sizing the reward, and it does not switch on for free in a list that is mostly creatures and burn. The card asks its pilot to seed the graveyard deliberately, and repays that bookkeeping with a two-drop that lands on curve as a fair beater and grows into a real closer as the game deepens.