Nightmare's End

Nightmare's End (ナイトメアブレイク) is Sora's Reality Shift in The World That Never Was. D|uring the Reality Shift the player must swipe through the white chains on the touchscreen as they move across the screen in three swipes or less. When done successfully, a holograph of Riku appears, Sora and Riku each summon a colorful Keyblade, and they combine the two to form a giant blade, which they swing together in a series of enormous sword strokes which damage enemies in a certain radius.

The Reality Shift is also used by Sora to cut up buildings blocking his path in the Dark City, along with the battle with Xemnas in order to stun him for a period of time.