According to David, they are stocked and maintained by the vending machine company
Flavor Text All that has been wrought by those who wield the Three will turn to their undoing, and their minds and hearts will become revealed to Sauron, if he regains the One
Still, nothing beats ripping open the included boosters
The power here isnt in either of those modes specifically, but rather that this card is super flexible
The 10-19 effect actually lets you go 1 for 1 on cards, and obviously the mind control will feel like a 2-for-1
That could be a card like Davriels Withering, which perpetually gives a creature -1/-2 if that card reduces a creature to 0 toughness or less and sends it to the graveyard, for example, the debuff will remain in effect even if a player is able to bring it back to battlefield (causing it to immediately die again)