If anyone is curious, this is my current Balance Dark Cavalry version. Yes, I am still using Balance skill for the most consistent hand. The thing is, Beatdown is a damn cool skill - but it bricks.
I decided to run only 2x Circles cuz I think it is enough with Balance skill, I also reduced The Eye of Timaeus to 2x and with the Circle, I also reduced Magician of Dark Illusion to 1x.
I am using 3x Paleozoic Canadia because battle traps are less and less relevant and this one can also be used on a monster already summoned (floodgate can't do that) and it is also good to have a play to summon Canadia from the gy as the additional line of defense if something happens to first Dark Magicians while you wait for a good draw.
I use 2x Enemy Controller because it is a good synergy with Dark Magician deck - you don't want to have Rod or summoned Canadia on a field, and you can also tribute Dark Magician to take over their monster and summon Dark Magician back on a field with Magician of Dark Illusion. It also helps to summon it while protecting you. Enjoy! :)
get 1 more ASAP, for this version only 2 are needed. I've played this version without a Circle and it was alright so until you get the 2nd one, play without it.
Instead, run another Magician of Dark Illusion so you have 8 monsters and reduce number of spells to 6 so you have the better chance to draw into Circle. You can also change 1 Enemy Controller for Dark Magic Veil to help with summoning.