Translated the rest of the comic, but I can't figure out that spell card name. I bet he made it up just for this.

Also, this comic's panels move right to left, but you read it left to right. That's insanely confusing.

I suppose that might be because the artist is Chinese. I've came across a picture that didn't translate correctly at first because it was by a Korean artist and the text (in Japanese) was supposed to be read left to right.

SPELLCARD
魔符・星辰狂歓！

狂歓 means extreme joy.