Name:Grind
ManaCost:1 B
AlternateMode: Split
Types:Sorcery
A:SP$ PutCounter | Cost$ 1 B | ValidTgts$ Creature | TgtPrompt$ Select target creature | TargetMin$ 0 | TargetMax$ 2 | CounterType$ M1M1 | CounterNum$ 1 | IsCurse$ True | SpellDescription$ Put a -1/-1 counter on each of up to two target creatures.
SVar:Picture:http://www.wizards.com/global/images/magic/general/grind_dust.jpg
DeckHas:Ability$Counters
Oracle:Put a -1/-1 counter on each of up to two target creatures.

ALTERNATE

Name:Dust
ManaCost:3 W
Types:Sorcery
K:Aftermath
A:SP$ ChangeZone | Cost$ 3 W | ValidTgts$ Creature.counters_GE1_M1M1 | TgtPrompt$ Select target creature that has a -1/-1 counter on it | TargetMin$ 0 | TargetMax$ MaxTargets | Origin$ Battlefield | Destination$ Exile | References$ MaxTargets | SpellDescription$ Exile any number of target creatures that have -1/-1 counters on them.
SVar:MaxTargets:Count$Valid Creature.counters_GE_M1M1
Oracle:Aftermath (Cast this spell only from your graveyard. Then exile it.)\nExile any number of target creatures that have -1/-1 counters on them.