The new planar controller retains that designation until they leave the game or a different player becomes the active player, whichever comes first.
You can only use this effect of "Subterror Behemoth Dragossuary" once per turn
Suggested Cuts: Corpse Augur Magus of the Abyss Body Double Mercurial Chemister Etherium Horn Sorcerer Vela the Night-Clad Opportunity Curse of Disturbance Marchesa, the Black Rose Suggested Additions: Vedalken Aethermage Mystical Teachings Wanderwine Prophets Panharmonicon Deadeye Navigator Diluvian Primordial Cruel Ultimatum Docent of Perfection Brainstorm/Ponder/Preordain Gurmag Drowner Silumgar Sorcerer Dualcaster Mage Champion of Wits Ideally you want to replace the wizards that dont want to get copied with ones that do
As for the shield, Dinorphia Stealthbegia (YGOrg Translation) boasts 2500 DEF and lets you skip LP costs to activate any Trap Cards or Dinorphia effects once your LP drops below 2000
A deck that combines the ramping magic of Sapphire with Emeralds dastardly trickier, players will also benefit from some pretty insane draw support thanks to the likes of the Floodborn Donald Duck, Sail the Azurite Sea, and Clarabelle, and especially the solid new Cinderella thats making waves in many Sapphire decks right now
Summary Prepare for the release of Disney Lorcana's Shimmering Skies with the Amethyst & Ruby or Emerald & Steel starter decks