Teacher's Pest is a uncommon Creature — Skeleton Pest card from Secrets of Strixhaven (SOS), collector number 238. Current market price: $0.31 (foil $0.33), TCGplayer market prices via Scryfall.
Menace (This creature can't be blocked except by two or more creatures.) Whenever this creature attacks, you gain 1 life. {B}{G}: Return this card from your graveyard to the battlefield tapped.