Grist for the Mill

{x}, {t} and sacrifice x creatures with total power
zero: Choose x. You may choose the same mode
more than once.
* Create a food and a clue.
* Untap 2 target lands.
* Return target artifact from your graveyard to
your hand.
* Creatures you control get +1+0 til end of turn.
* Creatures you control get +0+1 til end of turn.