Halsin, Emerald Archdruid
Legendary Creature — Elf Druid
2 / 4
: Until end of turn, target token you control becomes a green Bear creature with base power and toughness 4/4 in addition to its other colors and types.
Choose a Background (You can have a Background as a second commander.)
If your commander loses the choose a Background ability or stops being a Background during the game, as appropriate, it is still your commander.