According to Wizards of the Coast (via Hipsters of the Coast ), the reason for Drannith Magistrate's ban is that, in the Brawl format, " it shouldn't be so easy for a single card to completely shut down a class of commanders
In a game where damage is usually about the combat step, it can be a useful tool to build out direct damage options to finish the game
I wasn't sure if I should be dropping a land in this deck, but I feel there are enough lands with mana rocks to still be fine
Being nibbled for one damage by a single 1/1 Rat is often so inconsequential that it can be ignored, but even a few Rats dealing damage in the form of poison counters can be a real threat
However you dont have to wait to do that as the rest of the card works fine without doing so
This deck has a ton of great auras and Preston will help you cast them all by untapping a bunch of lands during your turn