Spineblade horror

You may exile any creatures
you own on the battlefield when
this card enters the battlefield. This
creature gets +X/+X where X is the
number of creatures you sacrifce.
{1}{t}: Remove a +1/+1 counter from
this creature, create a 1/1 horror creature
token with haste.
The undercity is home to many horrors. This
is only the surface layer- Lavinia