Watermark: Dromoka Illustrated by Christopher Moeller Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
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In a rule specific to drafting Double Masters, you also get to pick two cards whenever you open a pack, which means you can end up with a lot of powerful cards and a slightly stronger archetype as a result
Putting together a deck revolving around a specific card or effect you like (and tweaking that deck over time as you find out what works and what doesn't) is strangely moreish
However I did draw a hard line around cards which primarily serve to mill your entire deck into your graveyard in one go: Hermit Druid, Cephalid Illusionist, Balustrade Spy, and so on
And it broke the game's clock system since in tournaments, when a round goes to time, players get five more turns to finish the match, which doesn't work very well if one of those turns can be an hour-long Nadu loop