Lim-Dul, the Possessor

Lim-Dul, the Possessor enters the battlefield as a copy of any creature on the battlefield, except it gains ''{3}{u}{b}, Return this creature to its owner's hand: Gain control of target creature with the same name as this creature.''
Madness {2}{u}{b}
Mairsil's invasive presence was a painful but valuable lesson for Lim-Dul, one which he employed to subsume the mage Azar on Shandalar.