Dr. Barnibus B. Bumblecock

Dr. Barnibus B. Bumblecock has Indestructible if
you've copied more than 3 historic spells this game.

Plagiarist(Whenever an opponent casts a historic
spell, you may pay mana equal to half that spell's
converted mana cost rounded down. If you do, copy
that spell. You may chose new targets for the copy.)

"You know, this idea might have potential... if we
work together."