mtg commander wall deck EDH Deck Arcades, the Strategist 100 Magic Cards Custom Deck Defenders Walls flying Shroud (This creature cant be the target of spells or abilities.) My Commander deck wall :

This is decent card selection, and Flashing it back triggers 4-mana payoffs

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Heres how a list might look like, inspired by Daniele Ingallineras Top 8 list at the online MagicFest: Creatures (4) Lands (29) Spells (27) 4 Opt 4 Expansion 4 Growth Spiral 4 Wilderness Reclamation 2 Aether Gust 1 Mystical Dispute 1 Scorching Dragonfire 2 Storm's Wrath 3 Thassa's Intervention 2 Boon of the Wish-Giver Sideboard In this list, there are four Opts and two Boons, but its definitely possible these numbers could be swapped or even increased to four copies of each in the future, depending how things shape up

As you may have noticed from each other entry on this list, many pirates have abilities that trigger when the creature at hand attacks, synergizing quite seamlessly with the Dethrone and recursion Marchesa provides

Full Art lands

Some enchantments don't pair well with colors that let you ramp your mana meaning you don't always live long enough to play them