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Archetype of Endurance Archetype of Endurance feels like it must be on this list because it only deals with hexproof

Cards: * Dark Magician Knight * Knight's Title and * Sage's Stone

Primeval Protector Primeval Protector is a 10/10 avatar for 11 mana that costs less for each creature your opponents control, so its a very effective choice in multiplayer Commander games

In the late game, they get a lot less impressive Paying two mana for a treasure is terrible, but this can at least give you an actual card from out of the graveyard, and that certainly matters in this format, where this is likely to get milled or sacrificed for value

Having this sort of ramp attached to your commander makes it incredibly difficult to keep Choco off the battlefield, and the Bant colors gives you access to counterspells and things like Teferi's ProtectionTeferi's Protection to protect your growing Bird army from battlefield sweepers