Scholar of Athreos
A 1/4 body in white that only drains once you've committed to black mana is the kind of two-color seam this era leaned into hard: a defensive wall priced to block all day, with a mana sink that stays dormant until the second color arrives. The toughness soaks up early aggression while the activation grinds, and the drain works the way classic life-loss effects do: each opponent loses one, you gain the total back. Against a single opponent that reads as a steady two-point swing per activation, repeatable for as long as black mana keeps coming, which converts a stall-breaker into an attrition clock over a long enough game. What restrains it is the rate: three mana per point of drain is deliberately dreadful, steering the card toward wins built on untapped lands and inevitability rather than tempo. Think of black's slow-bleed clerics, the Vampire Nighthawk school of block-now-win-later, but routed through white's fat toughness instead of black's evasion. The clarity of purpose is the whole appeal: a board it can outlast, and an Orzhov manabase behind it to keep feeding the drain.
