Keleth, Sunmane Familiar (CMM) #33 [EN/F]

{1}{W} · Legendary Creature — Horse · 1/1 · Whenever a commander you control attacks, put a +1/+1 counter on it. Partner (You can have two commanders if both have partner.) · She chooses her riders carefully and bears them to glory in battle after battle. · Illustrated by Jesper Ejsing · Commander Masters #33 · EDHREC rank 6635 · Magic: The Gathering, MTG