Myr Moonvessel

Death equals mana here, and that inversion is the entire point of the design. Most one-mana creatures want to live; this one is built so that dying pays you back a mana to match the one it cost, turning a 1/1 body into a delayed mana rock that happens to be able to block first. The trigger fires on any death, which means it answers to sacrifice outlets, combat trades, and board wipes alike: every removal of the body is also a mana source for whatever you wanted to do next. That makes it less a beater than a fuel cell, a piece you spend rather than protect. The catch is the discipline baked into the rate: you only ever get one colorless back, and only when the creature is gone, so it is a single-use ramp dressed as a creature rather than a repeatable engine. As a Myr it sits in the same artifact-creature tradition as the mana Myr that ramp by tapping, but it ramps by dying instead of by living, which puts it in a different strategic lane entirely: it wants to be thrown under a bus, fed to a sacrifice engine, or chumped away for value. The design quietly anticipates aristocrats-style decks long before that word was the shorthand, rewarding a board that treats its own creatures as resources to be cashed in.