Glissa's Courier

Creature — Phyrexian Horror2/3$0.04

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Legal in Commander

Is

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

Glissa, Herald of PredationGlissa's Courier is a Phyrexian, which Glissa, Herald of Predation can use.