Frontline Devastator
Afflict is a tax on the act of blocking, and this is the creature that makes the tax sting. The math the defender faces is unforgiving: throw a chump in front of this 3/3 and you eat two life anyway, take the body, or let three through. The pump ability is what tilts that calculus from a nuisance into a clock. Each block bleeds two whether or not the creature trades, but the activation lets the attacker keep raising the threat after blocks are declared, so a defender who commits a blocker can still find their creature outsized and their life total dropping. The design intent is to punish the natural defensive instinct: against most attackers, blocking is how you stem the bleed, and afflict inverts that, charging life for the privilege of stopping damage. The 3/3 body is plain on its own, but the ability rewards a board that has already forced bad blocks, turning the late game into a sequence of lose-life-or-take-damage choices where the mana sink means there is no clean answer at the same size. This is a creature for the aggressive deck that wins on the margins, the points of life squeezed out when an opponent is forced to interact with a threat they would rather have ignored.

