Add the fact that its ability, Fabled Luster, prevents Arceus EX from being affected by Sleep, Paralysis, Poison, Burn, and Confusion, it has an auto Lum Berry of its own which even works always
And it has arguably the hardest Immersive card animation, hands down
Run it and see what you think
Place equipments such as some of the popular swords like Sword of Fire and Ice and Sword of Truth and Justice when your opponent does not have any creatures with flying or reach for an instant win depending on how many buffs you give it
Fugue pretty clearly outclasses Predation here, since trading for an early play is better general coverage than a tapped land and being able to cheaply trade for a Negate or Disdainful Stroke later is going to crack open control matchups more than Predation would