Shifter's Shine

When you make a Charisma check while under
the effects of this potion, you can choose to forgo
rolling the d20 to get a 10 on the die. Once you
use this property, you can't use it again for the
remainder of the potion's duration.
You also gain the effects of the alter self spell for
1 hour (no concentration required) or until you
end the effect as a bonus action.