The emblem is a great payoff for milling your deck, making this planeswalker both an enabler and a reward for self-mill strategies
Moving through the deck, more established cards like Dream Chisel and Obscuring Aether can reduce mana costs of your face-down spells even if you cast more than one each turn
Finally, remember that anticipated cards that dont show up here are likely safe from reprint for a while based on what we know about the product schedule for this year
Legendary Planeswalker - Vraska Winds of Abandon Exile target creature you don't control
The thing is, while I could have just used this spot to enshrine the virtues of Crackle with Power over, say, Jayas Immolating Inferno, it felt like a waste of space
And it can also do a lot of manga in the late game when you need it to