She may even play land,s should you need the ramp on each of your turns, making her universally useful as a theft commander
Bennie Bracks, Zoologist is an Elf, but you're never going to try to build mono-White Elves with him as your commander
When you play any land, you can bring any nonland permanent from your graveyard to your hand
This forces your opponents to attack with all their creatures and hit anyone other than you, dishing out extra damage to your opponents, saving you from being attacked yourself, and removing would-be blockers so you can safely attack your opponents
The two modes dont seem to have too much to do with each other, so you can decide which is better for your battlefield state
Witch Enchanter Humans get their own Reclamation Sage that doubles as a land you can easily add to your decks by shaving a basic Plains