Rakdos Trumpeter

Creature — Human Shaman1/3$0.06

Menace (This creature can't be blocked except by two or more creatures.) : This creature gets +2/+0 until end of turn.

Legal in Commander

Is

Commanders whose abilities work with this card and share its colors, from what the cards do.

Jirina KudroRakdos Trumpeter is a Human, which Jirina Kudro can use.
Silvar, Devourer of the FreeRakdos Trumpeter is a Human, which Silvar, Devourer of the Free can use.