Who, Eccentric Scientist The second one came about a bit differently I started working on (what would become) the 15 doctors deck about a month after the set dropped
It draws cards at a bit more of an expensive rate than Phyrexian Arena, but it can also create threats and Treasure Tokens to go along with it
It was not, however, broken. At first glance, it seems too powerful, but in actual gameplay things worked out a bit differently
Tokens that you add to the board from mobilize and myriad are usually temporary, but The Master, Multiplied prevents you from having to sacrifice or exile them
There are 11 new creatures in this deck with the ravenous ability
Once Aurelias Vindicator leaves the battlefield, you get to bring them all back to their owners hand, refilling your hand potentially, or clearing the way for a big attack