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7 Ravnica Allegiance Ravnica Allegiance was a deep breath before the storm: the final expansion before Nicol Bolas master plan came to fruition in War of the Spark

When you exile a card from your hand you put it in the exile zone

It can't get any rarer than this - when only one copy of a given card exists, you know it's uniquely special

Then in your upkeep we can make free colorless mana equal to our artifact count including tokens like Treasures et all but only for artifacts though

The card prices and margins also tend to be smaller, although availability allows for dedicated speculators to make up for that by trading at scale online

Not only does that make your tokens stronger, but it means that Edgar Markov gets stronger too