Baxter Stockman, Mad Man

When Baxter enters and at the beginning of
your upkeep, create a 1/1 colorless Mouser artifact creature token.

When Baxter attacks you may pay {x}{u}{b}.
If you do create X 1/1 colorless Mouser
creature tokens tapped and attacking.

If you attack with 6 or more Mousers, Mousers you control gain Menace until end of turn.