Myriad is a powerful way to ramp up from one attack to many, and that plays very well with multiplayer and Commander and Myriad Vehicle is a good way to deal with that
If your opponent happens to have coulrophobia, this could mean you win on the spot
You can change any number or any number word anywhere on the card
A little ramp, a bit of pressure, maybe some card draw
Black: Sephiroth, Fabled SOLDIER - Ive lamented wanting more good token/sacrifice payoffs, since the issue wasnt so much that there werent many tokens/recursive engines (although many like Braids, Cabal Minion/Smokestack have aged their way out of a lot of power-motivated cubes, mine included.) Being a sacrifice payoff and a Blood Artist with a real body make me curious, since black 3s arent as stacked as they are in white
It can get as big as you need it to get to slam into your opponent or their creatures for lots of damage in the late game