Weave Recall - Finale

You touch and retrace your own thread you've sewn into the weave, recalling and drawing power left behind by each spell you've conjured since the beginning of the day.

A creature you can see withing 70 feet of you takes 1d6 force damage for each missing spell slot you have. You may have one creature the caster can see take 1d6 damage instead of the of the original target, so long as you can draw a straight line from one to the other. You may only draw one line from a target to another not yet affected. For each creature affected beyond the first, the damage taken by the next creature in line is increased by +1. A creature may make an intelligence saving throw to take half damage. 

i.e. (three missing spell slots before cast) one monster is designated and takes 1d6, the next takes 1d6+1, the last takes 1d6+2. 

or one monster takes 2d6, the next takes 1d6+1. 

the number of dice you can roll are basically the number of targets you can have.