mtg commander decks dnd Foundation : r/mtgfinance Adventures in the Forgotten Realms:

In decks like Ad Nauseam + Tendrils, the card is used either to get enough storm count by drawing free spells or to find your Tendrils of Agony win condition

And you may get some extra shinies that you won't find in the Commander precons

0: Create a 1/1 red Devil creature token with "When this token dies, it deals 1 damage to any target." 6: You get an emblem with "At the end of the first combat phase on your turn, untap target creature you control

To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Earth Crystal's first ability)

Deharme All in all, card types are a broad topic with lots to discuss

Also, the decks I said it didnt belong to are a narrow band (with the main relevant one being Najeela, the Blade-Blossom)