Rakdos the Defiler
The guild leader rendered as pure liability. Rakdos's flavor demand is that you tithe to the demon every time he swings, and the design takes that literally: each attack halves your own board (rounded up), so a wide army becomes a smoking crater after two or three swings. The reciprocal trigger on combat damage punishes the defender the same way, which means the card is functionally a race against your own engine. The body does enough that this can work: a 7/6 with flying and trample closes a game in three connections, and the sacrifice is "non-Demon," so a token-light, demon-heavy shell pays less of the tax. But the design refuses to be a clean finisher. It is a build-around that asks you to feed it expendable permanents (tokens, treasures, fodder you were going to lose anyway) so the halving costs you nothing you cared about, or to simply win before the math catches up. That tension is the whole point: a Demon this size should win on stats, and the attack trigger exists to make sure it never just does. Plenty of black creatures since have asked for a sacrifice as a cost; few demand a percentage of your battlefield as a recurring upkeep on swinging, which is what keeps Rakdos a personality on the table rather than a stat line.
