I recommend non-alcoholic eggnog for this challenge, or things are going to get sloppy in a hurry
Since casting a card with retrace from the graveyard moves that card onto the stack, no one else would have the chance to affect it while it's still in the graveyard
Each booster pack contains: 1RareorMythic Rare
Oftentimes its finding the Tendrils of Agony or similar effect that actually wins
Having to pay life and mana for the extra card is a little rough but you don't have to add anything after the mill, making it a recurrable mill engine for reanimator decks, descent decks, self mill etc
Her ability to generate thopter tokens that can be used (similarly to Prossh, Skyraider of Kher) for various combos, including infinite damage, infinite mana, and infinite life