How do you capture a wizard?

[Calanon]

And would you allow this in your game?

Let us assume you are the DM, and the wizard pulls this off. Now let us also assume that the party is traditionally composed, i.e. melee, skillmonkey, healer. Your other players suddenly find the game a lot less exciting, while your wizard player chuckles gleefully at his rules loophole and newfound power.

I repeat, IMO this is a loophole, not RAI, because RAI is laid out in general principles in the DMG, page 13 (see the section on Keeping Game Balance, which says it is "Good DM Management" to make sure no one PC outshines the rest).

WHOA! chill friend, I never said that I would do it (I'd certainly allow it as a DM)

If the Wizard went out of his way to gather 4 other spellcasters with Tattoo focus, then you bet your ass I'd allow this Besides, In my games, I ALWAYS make people regret every single exploited action they make "Oh you want to make an army of Ice Assassin using Circle magic? Alright then the other participants gain as much control over the Ice Assassins as you do."