Since Grixis struggles with the removal of enchantments, this can mean the end of your thievery if nobody else has an answer (or even cares to answer it)
Processors and the like will not affect this value
As you can see, your foe becomes a Monarch this turn when he ETBs, and you cannot swap over after your combat this turn
Too many people abuse this silent agreement that lands should be left alone and go overboard by stapling strong effects and interactions in their land base, knowing people likely arent running the correct targeted removal to deal with it
Commanders like Kami of the Crescent Moon, Kwain, Itinerant Meddler, and Ms
Advanced collectors will pick these lots up just as a way to fill missing cards they have from past-generation sets or fill out common cards, which are often needed as part of building out a tournament-legal deck