If using a small handful of powerful creatures, then you might want spot removal like Murderous Cut
Cards in graveyards can't be the targets of spells or abilities
Confusion in the Ranks Confusion in the Ranks is another chaos-centric card that swaps any artifact, enchantment, or creature entering the battlefield with another permanent of the same type
Its not just being able to avoid the damage from Lightmine Field or Powerstone Minefield, its making you immune to direct damage
In Strixhaven they gave us lots of cheap and/or powerful cards that allowed you to Learn, and thats going to be necessary for the mechanic to shine in Avatar too
The monarch draws a card at the beginning of their end step, and players who aren't the monarch can become the monarch by dealing combat damage to the current monarch or by playing their own monarch card