TBoMT, pg. 50
Spray of Cards
2-level Conjuration
Casting Time: 1 Action
Range/Area: Self/15ft Cone
Components: V,S,M
Materials: Deck of Cards
Duration: Instant
Attack/Save: Dex 13
Damage/Effect: 2d10 force
You spray a 15-foot cone of spectral cards. Each creature in that area must make a Dexterity saving throw. On a failed save, a creature takes 2d10 force damage and has the blinded condition until the end of its next turn. On a successful save, a creature takes half as much damage only.
At higher levels: At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d10 for each slot level above 2nd.