Plan C is to beat them down with Tarmogoyf backed up with Deathrite Shaman, Thoughtseize, and Abrupt Decay
Marneus is an excellent payoff for the multitude of cards in Esper that generates tokens, including Nadir KrakenNadir Kraken (it's a combo!), Lotho, Corrupt ShirriffLotho, Corrupt Shirriff, and Smothering TitheSmothering Tithe
If you cast Early Frost in the first 3 or 4 turns of the game, its practically Time Walk
Its not just mechanics and keywords that make a return here either, as there are a number of incredibly cool reprints that bring new cards into Modern from previous sets
Goad debuted as one such mechanic in 2016's Conspiracy: Take the Crown, and has been forcing action in Commander ever since
In Destiny, we have 30 card decks with maximum 2 copies of a given card