I Normal Summon "The Sounds of a Piano Heard After School"!
I noticed that the page for Prism was edited recently and wonder if it has anything to do with the Xynrife Shadow games.
I got the idea from the Prismatic Bolt spell from
Puzzle Quest: Immortal Edition, haha.
But yeah, 'tis a spell in the XSP (else it wouldn't have had a Serenthan element).
Still thinking about other tiers for the series, too.
EDIT: I got ideas thanks to King, somehow.