Auntie Flint (UNK-RB03A) - Unknown Event

Mono Eminence — If Auntie Flint is on the battlefield or in the command zone and your deck's color identity is mono-black, creatures you control get +1/+0.
Whenever Auntie Flint attacks, another target creature gains fear until end of turn.
Partner (You can have two commanders if both have partner.)