Moss-Pit Skeleton is a uncommon Creature — Plant Skeleton card from Zendikar Rising (ZNR), collector number 228. Current market price: $0.17 (foil $0.31), TCGplayer market prices via Scryfall.
Kicker {3} (You may pay an additional {3} as you cast this spell.) If this creature was kicked, it enters with three +1/+1 counters on it. Whenever one or more +1/+1 counters are put on a creature you control, if this card is in your graveyard, you may put this card on top of your library.