Unforgiving One

The reanimation payload scales off a stat unhooked from the graveyard entirely: X counts modified creatures, bodies wearing Equipment, Auras, or counters. That coupling is the whole engine. On an empty or unmodified board, X is zero and the trigger reaches for a mana-value-zero card, which is a polite way of saying it does very little; festoon your side of the table with counters and gear, and the attack trigger claws back progressively fatter threats, one combat at a time. Menace does quiet structural work in that plan, because a creature that forces two blockers is a creature that is harder to profitably deal with in combat, and the recursion fires on the attack declaration, not on combat damage: it never needs to land a hit, only to swing. That timing matters, since it means the engine turns over even into an open board or a chump-blocking opponent. What separates it from open-ended reanimator effects is that the ceiling is self-imposed. You do not buy the big returns with mana; you buy them by committing to a modified-creatures theme, building wide and gearing up rather than hardcasting fatties. It rewards the exact board state that also wants an evasive attacker, a tidy piece of internal alignment. Absent modifications it is a 2/3 with menace and a trigger limited to mana-value-zero targets, the honest floor for a trigger that can otherwise return a five-drop for free every turn.