Sarah, the Unbound

Flying, Ward — You untap up to three lands.
Whenever you tap or untap Sarah, the Unbound
put a +1/+1 counter on her.
{t}: Add one mana of any color. Draw a card if
there are seven or more +1/+1 counters on Sarah.
{t}: Cast a spell from your hand with converted
mana cost less than the number of +1/+1
counters on Sarah, the Unbound. It gains flash.
"Nothing like being free!"