Mist Valley Thunder Lord

Synchro (You may sacrifice a Tuner creature and
another creature who shares a color with this spell,
where the total mana value is greater then or equal
to this spell's, rather then pay this spell's mana cost.)
Flying, hexproof
{g/u}, Return a permanent you control to it's
owners hand: Mist Valley Thunder Lord gets
+2/+1 until end of turn.