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For added value, you can even play it as a combat trick

Mana Crypt Mana Crypt is a prime example of how attaching life loss to a mana or card advantage doesnt make it fair, such things get you banned in Commander

Anti-Meta Warriors' unusually high levels of aggression combined with its ability to attack the hand (via Don Zaloog or Smoke Grenade of the Thief) can be useful for attacking some of the combo decks in the format like Empty Jar, Ben Kei, or Last Turn

The minimal consequences of a game allows you to experiment in a safe way

1 Sardian Avenger This Goblin card comes from The Brothers War Commander set and has snuck under the radar for many players