Lemra, Unseen by the Living

Partner, Flying, Shadow
Whenever a creature you control attacks, once
per turn you draw a card and untap this creature
you gain an additional combat phase or upkeep.
Whenever you gain an additional phase you
may untap a creature, an artifact or a non-basic
land.
{1}{b}{b},{t}: Create a 1/1 spirit creature
with shadow.