Lightshell Duo is a common Creature — Rat Otter card from Bloomburrow (BLB), collector number 56. Current market price: $0.10 (foil $0.19), TCGplayer market prices via Scryfall.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)