Acrobatic Cheerleader is a common Creature — Human Survivor card from Duskmourn: House of Horror (DSK), collector number 1. Current market price: $0.12 (foil $0.12), TCGplayer market prices via Scryfall.
Survival — At the beginning of your second main phase, if this creature is tapped, put a flying counter on it. This ability triggers only once.