I highly recommend running sources or Purge, Inhibited etc for facing him. Its nowhere near an unbeatable deck but Zeya plays it very well.
Yeah, he's been rocking it for several expansions now. Checking the combat log for Stealthed Time Slip, always expecting a life-saving spell on the Aspect, and making him float at 10 charges does a lot of work. It's kinda fun -- a unique challenge.
There is no point if he hides the Aspect near his shrine and timeslips/transfusion it for 30+ AP on a single turn. If flurry was removed for abusable issues, I don't think this kind of gameplay is intended.
And Tanglefoot was apparently so bad he has to have Pariah even after Flurry was removed. Hey... it's relevant enough.
Time Slip is just a dumb spell that promotes broken combos. Always hated the spell. Just my opinion however.