Use top-loaders if you plan on trading, selling, or storing Enchanted cards long-term
If youre playing an Aristocrats deck where sacrificing your permanents is of value, consider how fetchlands might help you up your game
Card sleeves, deck boxes, and neoprene gaming mats
Anyway, Corsairs of Umbar is a reasonably-efficient mana sink, token generator and damage-trigger-enabler, particularly when your commander is one of the eligible creature types
Its two mana less for the effect which is cool, but make sure you dont have any Grave Pact effects since an opponents creature hitting the yard means Magus is OUTTA HERE
If you are going second, or know your opponent will play an Evasive character turn one, follow up with Minnie Mouse Ghost Hunter to give Nick Alert to take most one-cost characters out, or at least make them think twice about questing