Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token.
Partner—Character select (You can have two commanders if both have this ability.)
Splinter turns every creature death, sacrifice, or bounce into ramp by churning out Mutagen mana tokens, so you build an aristocrats engine that grinds the board while you reload. You sacrifice and recur creatures to drain life, generate value, and ramp into big black payoffs, eventually closing with a mass drain, a recursive sac loop, or a reanimated bomb.
Free ramp from any nontoken creature leaving play (death, sacrifice, blink, or bounce) fuels explosive turns
Slots perfectly into aristocrats: every sac outlet you already run now also nets mana
Cheap 2-mana commander with menace makes it hard to chump and easy to redeploy
Mono-black gives deep access to tutors, recursion, and reanimation to keep the engine fed
Mutagen tokens are sacrifice-for-mana, so the ramp is one-shot and doesn't fix toward other colors meaningfully
Triggers only on nontoken creatures, so go-wide token strategies don't power it
Mono-black struggles with enchantment/artifact removal and lacks card-draw efficiency without life payment
Engine collapses to graveyard hate or if you flood the board with tokens instead of real creatures
Legendary Creature — Mutant Ninja Rat
