510 tomorrow's withered flower and behind the Ether door

...

Above the two-dimensional plane,

a shadow flitted back and forth at an extremely rapid pace within a rectangle!

Now it turned into a Raven,

then into a Moon Bear,

and shortly after,

it transformed into a Silver Dragon, a dragon turtle, a Holy Deer, and an ape...

If one were to look down from above the plane,

the astonishing transformations would appear to occur once every second at an ultra-high frequency, and the transformer was tirelessly continuing the spellcasting.

In the material world where three-dimensional space prevailed,

such behavior would have long triggered various spell constraints and backlashes.

But upon the stone walls of this Arcane Castle,

all restrictions were lifted.

Matthew could freely cast his Transfiguration spells and the associated Shapeshifting Forms!

He swore,

this was the most wonderful high-frequency casting experience he had ever had in his life!

He kept changing into various magical creatures.