Estrid, the Masked

[+2]: Untap each enchanted permanent you control. [-1]: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and totem armor. [-7]: Put the top seven cards of your library into your graveyard. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards. Estrid, the Masked can be your commander.