The aim of the deck is to slow down opponents via assymetric discard, fill up their graveyards with discard or a few mill options then clone or thieve from their graveyards to close out the game.
Wrexial is typically built as a mill commander but to me at least, discard seems more viable in terms of slowing down opponents while I build to playing a slow, high cost commander and swing with it. Cards such as [[Lazav Dimir Mastermind]], [[Consuming Aberration]], [[Shadow Kin]] and [[Dimir Doppleganger]] can become pretty potent threats early or late game.
Some problems I've had is putting opponents in top deck mode, but then my discard engine does nothing and gives no value. I'm also looking for more synergistic draw, I feel like that is lacking.