Midnight Sparkle's Controlled Pokémon Appears/The Ultimate Sacrifice/Final Attack/Pikachu's Voice/Ash's true Sacrifice/Finishing Midnight Sparkle, The Pony of Shadows and Marshadow

Here's the death scene

(As Emerl and Ash runs to an injured Pikachu)

Ash Ketchum: Pikachu!

Emerl: Oh, it's hurt badly!

(Then The Pony of Shadows and Mind-Controlled pokemon Appears)

The Pony of Shadows: Now let's end this once it for all!