Bola Slinger is a common Creature — Cat Soldier card from March of the Machine (MOM), collector number 8. Current market price: $0.07 (foil $0.30), TCGplayer market prices via Scryfall.
Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.) Whenever this creature attacks, tap target artifact or creature an opponent controls.