Folira, Mistress of Arcades

Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays
for {1} or one mana of that creature's color.)
Whenever Folira, Mistress of Arcades enters the
battlefield or a creature you control deals combat
damage to a player, you may tap or untap target permanent.
"I will stand by my Dragonlord, for he'd do the same
for his people."