Boneyard Hound

Undergrowth - When Boneyard Hound enters the battlefield, create X 1/1 white Spirit creature
tokens where X is the number of creatures in
your graveyard.
When Boneyard Hound enters the battlefield, if
there is another creature named Boneyard
Hound in your graveyard or on the battlefield
under your control, create twice X 1/1 white
Spirit creature tokens instead.