Divyan's Ultravariance (V2)

You reseed the sieve of randomness in the world around you, polarizing it with respect to one creature you touch. For the duration of this spell, whenever the target rolls a d20, they must use the following formula to calculate a new polarized number, which replaces the number rolled on the d20.

x = the number actually rolled.

y = the polarized result

y = (85.74 * x - 902.245) ^ (1/3)   + 10.5

If Y is greater than 19, or less than 2, treat it as a critical success or failure respectively. Otherwise, round y to the nearest whole number.