Calling a magic stone does not cause your J/rulers to rest.

If you would produce will with a magic stone you control, you produce that will plus instead.

: This card gains [+200/+200] and Flying until end of turn.

Quickcast

Choose a ruler with Tag (Six Sages) you control and a ruler with Tag (Six Sages) you own from outside the game. Swap those rulers. If you spent to play this card, put its "Princess Kaguya" part into the field instead of putting this card into its owner's graveyard.