Gramin, the Black Mouse

When Gramin, the Black Mouse comes into play, target opponent discards a card. If it is not a creature card, that opponent discards another
card. Every time Gramin deals damage to an opponent, this opponent discards a card.
Every time an opponent discards a card, put a Sabotage counter on Gramin.
Remove three Sabotage counters from Gramin: Destroy target land or artifact, then return Gramin to owner's hand.