Before the war

Whenever a Bender enters the battlefield. Target
Bender has +1 +1 until end of turn
My grandmother used to tell me stories about the
old days. A time of peace when the Avatar kept
balance among all tribes. But that all changed
when the fire nation attacked. Only the Avatar
master of all four elements could stop the Fire Benders.
But when the world needed him most, he vanished.