Strefan, Maurer Progenitor
Two abilities that lend each other purpose. Blood tokens are usually a slow, incidental resource: filter a card, chip in later. Here they become ammunition for a cheat-a-vampire-into-combat engine, and the end-step trigger is deliberately generous about restocking them. Any turn where multiple opponents lose life (a symmetrical damage effect, a drain, a wheel with a life-loss rider) refunds the Blood you spend, so the attack ability stops being a one-shot and becomes a recurring free drop. What it puts down matters as much as the mechanism: a Vampire straight from hand, tapped and attacking with indestructible for the turn, which sidesteps the two things that normally punish jamming a big creature into combat, summoning sickness and the blocker who eats it. Note the window that opens and closes here: because the creature arrives already attacking rather than being declared, its own "whenever this attacks" abilities never trigger, so the payoffs to load up on are enters-the-battlefield hitters and static threats whose bodies simply need to connect. The 3/2 flying body is the honest part of the deal: it wants to attack to fire the ability, and it does not survive much when it does, so the payoff is front-loaded and the pilot is exposed. This is a build-around that asks for a specific creature-type density and a way to keep opponents bleeding, then collapses a whole turn's worth of casting and attacking into a single point of tension on the stack.
