I really like this idea but realistically lets say with
which is an element that uses alot of spell manipulation and draw cards......so you wont be playing creatures quite as often....soooo vs something like
which has no spell manipulation and lots of creatures....it would really put a hurting on them.....for 3
u could cast this after ur opponent has 3-4 creatures out and really wipe the floor.
Compare it to plague which i believe costs 4.....its equally as fast if not and i believe it would be faster since it can eat big creatures if there are no little creatures.(unless im mistaken about ur idea) meanwhile its doing 7 damage each turn to the opponent. And it has the ability to remove its ability for 1 turn....yikes!
Super scary creature but i like it....i think it needs to cost raised just a tad though. maybe 1 or 2 more?