The rise of these more dedicated Monarch decks helped to push out Warriors more than Chaos and Tomato Control due to their focus on Tribute Summoning not synergizing with Warriors, meaning that Monarch decks often opted to not even use the smaller Warrior engines that other decks did
Zada has a lot of different ways of building, and each is different, but fun
Personally, I love having different card frames than what everyone else is running as I want to have a unique approach to my decks based on their themes, so this is a great opportunity to get versions of cards you may like for a considerable discount that you may be already interested in getting
Some equipment have both flash and an auto-equip ability: Embercleave, Mithril Coat, or Dueling Rapier can be played as instants and upon entering the battlefield you can directly attach them to one of your creatures
Between this and Erika, grass types are about to get very annoying to bring down
As one of the main mechanics of the set, it appeared on 35 cards, all of which had mana as the kicker cost