Boneyard Mycodrax

The graveyard is both this fungus's stat line and its ammunition, and the design plays those two jobs against each other. As a body, its power and toughness track the other creature cards piled in your yard, so it wants a full graveyard before it ever comes down; scavenge then lets you exile it to stamp that same power onto another creature as permanent +1/+1 counters. The exchange is quieter than it looks: scavenging the Mycodrax exiles only the Mycodrax, leaving every other creature in the yard intact, so what you spend is the flexible body itself, not the fuel that sized it. That makes it a threat you can cash in two ways, once as a growing beater and once as a stat transfer, without gutting the pile that feeds the rest of your engine. Black and green have long read dead creatures as material to be reused, and scavenge is the specific tool that keeps a spent creature working from exile instead of the battlefield; this is a supersized version of that idea, a beater that graduates into a counter package the moment the counters matter more than the swing. The sorcery-speed clause on scavenge is the honest limiter: you telegraph the pump a turn early and cannot spring it in combat. Everything about it points at a deck that mills, sacrifices, and reanimates freely, then treats the corpse pile as a scaling number rather than a heap of losses.