While my speculations and predictions for their impact on various formats remain optimistic, I believe we havent yet seen the full extent of how many playables Duskmourn will offer
If you're drawing multiple cards, each draw is performed one at a time
The design space is huge for cubes since they can be created with any theme in mind, and WotC loves to rock Powered Cube on Arena
Sure, it's just one cheaper than Mind Rot, but two cards, at random, on turn two (or earlier) is just hard to stop, and hard to answer
Let's break it down by answering seven questions: #1: Is it Better than Ruby Leech
Azorius Control aims to counter, remove, or otherwise neutralize every threat the opponent presents