mtg ikoria commander deck 2020 card list Magic the Gathering: Commander 2020 Decks - Full Set of 5 - MTG mtg legendary commander deck Amazon.com:

Your opponent has cast a weirdly outdated board wipe, and you're busy wondering why it isn't a Vanquish the Horde

If opponents remove Sephiroth for whatever reason, and trading a modded creature is a good rate to reanimate this powerful soldier

Now that Universes Beyond sets are Standard-legal, and have even lost the distinctive card borders that separated them from regular cards, Universes Beyond sets are also released on MTG Arena (and MTG Online)

Sram, Senior Edificer FINAL FANTASY: Through the Ages, Rare Limited: 4.0 There is a lot of equipment in this set, and most of it comes with a creature attached, so you arent even risking creature-light draws

Add the handy Whispersilk Cloak or Rogues Passage to ensure you cant be blocked

Adding all of these factors together, it seems like you can expect about 3 mana of value from the dungeon or a little less than 1 mana per room