Promise of Loyalty represents the partys resolve to continue on after learning the true nature of the world and they pledge to end the cycle of Sins Rebirth
Thats why we pledge to adhere to the highest industry standards
A giant monster isnt out of place in Golgari, and Simic slots can be difficult to round out in a lot of Cubes, so I see a lot of potential for this card to show up
Ancient Cellarspawn Im probably being hyperbolic putting Ancient Cellarspawn at number 1, but Im floored by this card, and none of that has anything to do with the cost reduction ability
Temporarily copying enchantments, then stacking lore counters
The ink colour comes full of characters boasting control effects that can shift cards between your deck, hand and discard pile, as well as controlling your opponents cards by forcing them to exert or even banishing them