Taklai, the Ragesinger

Morph — Sacrifice two creatures (You may
cast this card face down as a 2/2 creature for {3}.
Turn it face up any time for its morph cost.)
Whenever a creature you control is turned face
up or when one or more creatures you control
attack, draw a card and lose 1 life.
"Charge, children, with the guile of the desert wind
and the savagery of the wastes."