mtg commander master deck Magic The Gathering: Masters: Commander Decks The fate of all planes is at stake. MTG Commander Masters Deck -

With Possibility Storm in play, anyone casting a spell from their hand will exile that card and then exile cards from the top of their library until they exile another card with the same card type

This works against a spell that can't be countered

If Zurgo, Thunder's Decree is under your control as that ability resolves, those tokens won't be sacrificed, and the ability associated with those tokens won't trigger again

Kefnet the Mindful If you have enough mana, remember you can spend 9 mana per turn to loop the synergy of Mystic Sanctuary + Kefnet the Mindful + Time Warp to get infinite extra turns

It also being an instant and having flexibility really makes it stand out

The interesting thing about the Duke is that it affects the combat step when it enters, and each creature you cast after that can potentially have haste and myriad (although only one at a time)