Hmm. Seems like a permanent. If that's what you're going for, it's really exellent.
For a creature, though, try a big turtle with a cannon like that on the top.
Or just a big missile for a spell.
But
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
really doesn't need any more PC. CC?
The cooldown, on the other hand, is a
sorely needed mechanic in ETG.