I don't know that a modern R&D would have emergency banned right after a new card first saw daylight, but there is no denying this deck was unbelievably brutal as well as being the quickest kill in the formatTinker into Memory Jar into either Yawgmoths Will or a second Memory Jar, for a Megrim kill at end of turn
Job select cards are especially valuable in WU because you can fill out your mana curve with equipment artifacts
The resolution of the effect creates a wraith, then checks your total wraith count
To proliferate means to choose any number of permanents and/or players that have a counter, then give each one additional counter of each kind that permanent or player already has
You pay it for cards, reanimation, or pure tempo
If you do, Thief of Existence gains "When this creature leaves the battlefield, target opponent draws a card." When you cast this spell, exile up to one target noncreature, nonland permanent an opponent controls with mana value 4 or less