You can't target the same creature twice with Grind to give it two -1/-1 counters.
Grind // Dust
Once you've started to cast a spell with aftermath from your graveyard, the card is immediately moved to the stack. Opponents can't try to stop the ability by exiling the card with an effect such as that of Crook of Condemnation.
If one of Dust's target creatures loses its -1/-1 counters, leaves the battlefield, or otherwise becomes an illegal target before the spell resolves, it won't be exiled, but the remaining legal targets will be exiled.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Josh Hass
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
