Please link where you get your art sources from the in ART box. Additionally, card art is meant to go into a card - please use the Card Image Builder to make your card image with the art in question, assuming that the art you have is free-to-use source.
Fixed. Yes the art is public on Devian Art.
Rebalance stats, a card with a useful ability like that should not be this cost-efficient in terms of stats. Ability is interesting, might be overpowered.
The cost is not high because you can only use the skill a single time. It is almost a crap shoot. If the card is not a creature you just lose your Graeae. It is basically a one time use. However you may choose not to use the skill and allow it to remain on the field as a normal creature.
***Possible modification***
Instead of destroy, change skill to discard. This could be paired with GotP for damage. Still a single use skill.
I dont think it is OP with only a 1 time use. Just my opinion though.