The 17 cards we replace them with will focus the deck toward paradox triggers and add more flexibility to reset the board when things aren't looking good for our heroes
They just wont be scarce enough
It doesnt quite have the infinite combo potential of cards like Dockside Extortionist, but finagling a means of casting or copying this several times can be just as good
Plargg and Nassari I love the design of Plargg and Nassari, as it creates a political game in multiplayer, allowing an opponent to choose which spells among the exiled cards will likely resolve
All four have the ability to net card advantage, so the spell gives you card advantage easily
A lot of your most impactful cards are going to be in the 3, 4, and even 5 or more cost range, so you'll be laying a lot of hopes on individual characters here (as opposed to building up a wall of characters as in the Amber and Amethyst deck)