Commander decks are meant to be played more than once, and if you find yourself executing the exact same strategy over and over again, you probably wont have much fun
Additionally, it is designed to fit standard size trading cards, ensuring your cards are securely stored and protected
Standard has many lands that provide both black and colorless mana, such as Llanowar Wastes, Caves of Koilos, and Corrupted Crossroads
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It's also important to stress an important point about Cirdan the Shipwright: though it works with the Voting mechanic, it is a somewhat risky card, both as it provides advantages to your opponents and as it can "fail" in a certain way: if your opponents decide on a way to vote that never favors you, Cirdan the Shipwright ends up relatively bad
Burst self-mill cards are effects like Drown in Filth and Mire Triton that mill you once, often with the spell resolving or a creature entering the battlefield