It was just another deck in the format, and was a pretty big underdog to decks with a lot of interaction (Jund, Abzan, etc.)
He thought to himself, What if I could build a deck that utilized both of these cards as win conditions, and actually make those win conditions consistent? His idea took off with a start, building what was considered one of the first ever Mono Black Control decks in the newer Modern format
Finally, any expensive spells that were low impact
Originally from Throne of Eldraine, the adventure mechanic receives a few updates with the return to Eldraine
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While not the most flash of those cards, those of the uncommon rarity have certainly had their impact on the game