Garorag, Who Weeps

Trample, haste
When you cast Garorag, you may sacrifice any
number of nontoken creatures, if you do, it costs
X less to cast, where X is the number nontoken creatures sacrificed this way.
Whenever Garorag attacks, you may return a
creature sacrificed with it to your hand, if you
do, Garorag gets +X/+X, where X is the power
of the returned creature.