#719 · Sword and Shield Ultimate Plus · changed in this game
Diancie (Mega)
RockFairyMagic Bounce
Level-up moves
This game's documentation doesn't publish learnsets, so none are listed here — see the coverage notes on the guide page.
TMs & HMs
This game's documentation doesn't publish TM compatibility, so none is listed here.
Where to find Diancie (Mega)
Not found in the wild — evolve or trade for it.