Spirit Cairn

Discard is usually an opponent's resource problem; this turns it into yours. The trick is the trigger fires on any player's discard, which means it doubles as a deterrent and a payoff depending on who controls the hand attrition. Point a discard outlet at your opponent and every card they pitch to a Mind Twist-style effect refunds you a flying body; play it across from your own hellbent shenanigans and the cards you cycle, discard to hand size, or feed into rummaging effects each become an optional one-mana Spirit. The tax per token is the lever that keeps it from running away: you choose, per discard, whether the token is worth the mana, so a turn with five discards doesn't drain you dry unless you want the army. It sits in an early-era well of white tokens-from-passive-triggers, a design school that rewarded a deck built around forcing or generating discard rather than slotting in as a generic value piece. What it cannot do is carry itself: absent a discard engine it's a blank enchantment, and the steady, repeatable conversion of cards-into-bodies it offers in exchange scales only with how aggressively you can churn hands.