japanese pokemon gx booster box Pokemon: Triplet Beat Moon Era Japanese Ninja Spinner Booster Pack

Our number one for this set is none other than Eldritch Evolution

Marvin, Murderous Mimic In a moment of bloodthirsty whimsy, a razorkin once picked up a lifeless ventriloquist's puppet and used it to terrorize a survivor only to receive a nasty surprise when the puppet quickened, its dormant seed of life nudged awake with the razorkin's unwitting aid

(Note that we received all of this information yesterday, but I didn't want to post it to avoid April Fools' confusion.)

In the end, Teachings prevailed that time, but Ancient Grudge was on the scoreboard, and it appears to have been holding a persistent feeling of ill-will this whole time