? umm i can try and refind it? i dont even remember what i searched to find it though.. ill probably get a diff picture.. anyway.. instead of commenting on the art can i get curator comments on the card effect.. art really is the last thing im worried about. that can be changed later and made better.
I think this card has definite potential.
But here's the thing - Chimera is sort of Gravity's territory, because this essentially the same card (Chimera) in the form of a spell (can be applied to either player). Assuming you're dealing with a lot of creatures on the field at once, playing this can potentially act as a OHKO (almost) as they take damage upon gaining the Chimera. Also, as midg3333 stated above me - a quick rewind, mutate, or several of your own creatures can take it down pretty easily, rendering the opponent useless of their attackers.
A fun idea I thought about was this - why not have it as a 'continuous' mutation spell?
For example: you target a creature with this, and they get a special 'debuff' (similar to infect/poison/gravity pull) that stays on no matter what. Each turn, the creature mutates into another creature (upgraded possibly?) and the owner of that creature takes damage equal to half its attack. This way, you only affect one creature at a time (rather than combining everything into a Chimera and instant-killing it with enough damage or a spell), and it also can be used on your creatures, assuming you'd be willing to deal with the damage you take from it constantly changing all the time. A mistake each turn, perhaps...
Just my suggestion.
Unless the opponent has spammed dragons and growth creatures, this card's after effect won't do much to save you (unless you can remove the chimera the turn you play this).