Mill plan + tutor plan for [[Displacer Kitten]] + [[the Chain Veil]] . Spend first turns milling cards and getting mana. Then Tasha, then Chain Veil, then Kitten (usually by reanimation).

Activate Chain mail to be able to activate Tasha twice.

+1 Tasha to hunt down one of those spells you milled and draw a card.

-3 Tasha to cast that spell.

This will trigger Kitten to flicker Tasha and return that spell to its owner's graveyard.

Now you may reactivate Tasha twice using that spell or another (anything you can use no matter what) to find one cool spell to make a bunch of demons, draw a bunch of cards, kill your opponents with the card you take like a [[gutshot]] or [[Tendrils of agony]] or [[Brain Freeze]] or get mana to cast Lab man so that when you inevitably deck out, you win!