En tu paso de enderezar no vas a enderezar ningún permanente, pero en el paso de enderezar de tu oponente la habilidad de Seeborn Muse va a enderezar todos los permanentes que controlás.

Embargo
3U
Enchantment
Nonland permanents don't untap during their controllers' untap steps.
At the beginning of your upkeep, you lose 2 life.


Seedborn Muse
3GG
Creature -- Spirit
2/4
Untap all permanents you control during each other player's untap step.