Nice work, JediOre. I like the overall chart you've put together. As Ducaster suggested, it may be a tad powerful at the upper end, but on the other hand how often will a wizard get to roll that high on the chart? Maybe it's a non-issue.
Thanks for the feedback guys. My concern is I'm not sure the spell is powerful enough!
With no third level spells to gauge against, I wanted this spell to out perform the first level examples.
The original spell, as outlined in the 3.X adventure caps at 8d6 for 12th level casters. That was one of the guide lines I used in this 5-minute conversion.