Willing Sacrifice

All skeletons you control gain +1/+1 and haste.
Willing sacrifice cannot target artifact creatures.
{1}{b}: Sacrifice 1 creature card you have in play
or from your graveyard: Put a 1/1 token
creature into play. This token counts as a
skeleton and a black creature. If you control
any clerics gain 1 life each time you use this
effect.
"Give us your flesh, serve your master,
become more than you are..."