For my money, your best hit is Kuldotha Forgemaster, which you can use to create search chains similar to a Birthing Pod deck or you could just drop a Blightsteel Colossus to close out the game
If you're curious to know which Commander Masters cards are the ones worth keeping (or the ones worth selling, if you're of the more mercantile mindset), then this list will provide you with an easy point of reference
Think of all the times your Commander pod has joined forces against you
Part of this celebration involved creating promo Pokmon cards, one of which was a Gold Pikachu sold only in Japan
Alongside this deeply synergistic effect, Witch-King of Angmar is a respectable defensive threat as they can gain Indestructible
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