I actually really like this card a lot, but I noticed a couple of minor spelling mistakes in your table post. ^^;;
For Metamorphosis, it should read:
"Targets an insectoid creature. It becomes a Cocoon, which turns into a dragon after three turns." In the first non-upgraded table, the 'which' part is missing an 'h'.
You can also change it to:
"Transforms an insectoid creature into a Chrysalis (Cocoon) that will turn into a dragon after three turns." - But that's not the point I suppose.
Also, for Cocoon, it should read:
"Turns into an elite dragon after three turns." You forgot the 't' part for 'into'.
Anyway, with that said, I would find it really awesome if there was a way to
make a creature into an insectoid with another card to help this synergy better. Like, if Butterfly Effect also gave the creature the insectoid passive while giving it the active skill of Destroy, for example. This way,
,
, and
wouldn't be necessarily left out. Also - you forgot to include
as a part of your insectoid list! >.> So technically, you can't make Arctic Dragons.
...of course,
doesn't have any insect creatures. ^^; Unless Mind Flayer is some advanced, insect-humanoid...