The three chapters are: Urzas Saga can tap for one generic mana
The Melbourne DLC showcased some of what Winterspell could offer, with more than 400 different decks competing, adding some staple cards from set 11 that integrate rather well with some already verified decks
Take this as you will
I didn't have a spare copy of Purphoros, God of the Forge, but Impact Tremors, Outpost Siege and Warstorm Surge are all in my list, and I've added some Black payoffs into the mix
You have Madam Mim Fox who is the strongest of the Madam Mim cards to decimate your opponents board, Merlin Crab to add firepower to your units, Kit Cloudkicker who can bounce a lot of lower-powered characters, and even Peter Pan who can grant all of your Evasive characters Rush, enabling a lot of versatile plays
I think that this is a very fun design for casual Commander