How about some FSN merch? This time we explore the side effects of Caster's rule-breaking magic.

Caster appears standing... sideways. "This new Rule Breaker blade will shave off every Servant rule in the book and every hair on your pits!" Pan out. She's actually attached to Saber Lily's armpit. "Oh no... I'm a hair!"

"You're about to get SABED!" shouted Saber Lily holding an electric shaver.

"Oh no!" Caster ties to stop the shaver wit her bare hands. The two Servants keep yelling at each other for a while until Caster calls for a truce. "Wait We sure had a lot of fun fights together, didn't we?"

Saber's now a bit teary-eyed. "Remember that time you captured me with your magic?"

"It's the best day of my life..." Caster reminisced.

"I'M SORRY!" shouted Saber finishing Caster off with the shaver. "Excalibur Electric Shaver! It's sharp."

"That was sharp shaving," called out Caster from the sink. She gets flushed by Saber's tap.

Get shaved in the pits! I did!