Firechanneler Phoenix

Flying, haste
Whenever three or more other creatures leave
graveyards during a turn, you may return
Firechanneler Phoenix to the battlefield with two
+1/+1 counters on it.
Channel — {0}, Discard Firechanneler Phoenix:
You may cast a spell with mana cost 3 or less
without paying its mana cost as long as it is
the first spell you've cast this game.