Brron lv40 definitely has one of the most broken piece of rigged 🔥 for his AI and deck
Skill that not only brings out Gate, but also make him always have Reign-Beaux and Ceruli in the first 3 turns. I tested, the Skill definitely also rigged his hand. It took me more than 5 tries to finally beat him while also fulfilling all the missions at the same time.
use neo-spacian scarab neos deck,
quick spam your field,
use power of the guardians,
1-2 debunk are great addition to beat him and finish the mission fast.
You have to believe in the heart of the cards.
Me, only add 1 De-Spell in the deck, got it on my 1st draw phase on the 1st try XD. BTW if you destroy the field spell, so long you have 1800+ beater and/or good back-row, it's easy to control the game. I was using 1700 beater+some equips, twin-headed, ene-cons, aphopis, debunks, required cards for the mission, "1" de-spell and that luck to draw it XD