Nimrodel Watcher

Here is a two-mana Elf that turns library manipulation into an attack plan. The keyword it cares about is normally an afterthought, a smoothing rider bolted onto spells to soften bad draws; this body promotes it to a combat trigger. Any scry from any source, on the same turn you swing, hands the 2/1 an extra point of power and a clear path through the red zone, so a routine card-selection effect becomes an unblockable 3/1. The once-per-turn clamp does real balancing work: pile up five scry triggers in a single burst and you still collect exactly one pump, so the payoff belongs to a deck that scries a little every turn rather than all at once. That structure asks a pointed deckbuilding question, namely how reliably you can guarantee a look before the attack step lands. It sits alongside creatures that graft a payoff onto ambient value keywords (the way certain designs cash in on landfall or lifegain triggers you were already generating), and it plays best when the scry is something you time deliberately rather than something you fire off at end of turn and forget. Answer the timing question, and a cheap creature converts your card filtering into repeatable damage that combat math cannot touch.