In before it's just a simple "does double damage to Dynamax users" move. But I hope they do something interesting, like have it call in Psychic Terrain or something.Doesn't look like any of the moves I've seen so far.
Then again, Calyrex is the DLC's ""restricted"" most likely, and them having signature moves is pretty standard by now. I at least hope it doesn't end up being a clone of Necrozma's or another "normal hit with mold breaker" and actually does something cool.
Knowing it's a Psychic type move is both interesting and disappointing. Grass is underrepresented in Ubers and it'd be nice to see it relevant as an offensive typing, as opposed to yet another primary Psychic in a format that's already at saturation level with them.