Mad Hatter, Gracious Host Emerald and Ruby offers a fair amount of complexity but not much competitive value
They always cost 7 colored mana, and use zero generic mana which requires incredible mana fixing to play on curve
This has included the ability to battle other trainers, build new decks, and (most importantly/potentially problematically) feel that serotonin hit of ripping a new pack of cards to add to the collection
However, if you were smart enough to spend the equivalent of five packs to get your hands on this rare promo card, then you're likely smiling ear to ear as you read about its roughly $300 value
(Each in the mana costs of permanents you control counts toward your devotion to black.) Your opponents can't gain life
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