Alister's Certainty

You channel the knowledge of the future into the mind of a willing creature of your choice that you can see. Whenever the target makes an attack roll, ability check or saving throw, treat any roll of 9 or lower as a 10 on the die.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target one additional creature for each slot level above 1st.