The card is an enabler and payoff for colorless ramp, becoming a huge beater while generating the mana for expensive spells
Memnarch Memnarch lets you steal every artifact your opponents control, plus anything you can pay additional mana to turn into artifacts
Path to Exile This one has been discussed at length, and for clear reasons
The poison apple in Snow White is certainly one influence on this card, but so too are stories like Hansel And Gretel , where witches seek out children to eat
Paying five mana to create a rat creature token for each opponent you have is expensive, but in Commander, that could be up to three
Of note is the return of Deep-Cavern Bat over Azure Beastbinder and the choice of Faebloom Trick over Preacher of the Schismsensible adjustments if you expect more mirror matches