Champion Concept: Spookyface

My thought is, that while champs like and are thematically spooky, they don't often give you a spook in game. I want a champion that spooks and startles.

Passive: Spooky Hoard: Once per minute summon a spookyghost that neither shows on the minimap nor grants vision. For five minutes Spookyghost locks on to the nearest enemy champ and pursues them at half Spookyface's movement speed (like a hoard of shambling zombie) and upon impact does 25% missing health in magic damage.

Q: Hide and Seek: Target enemy takes damage based on their distance traveled and heals Spookyface for the damage dealt. When an afflicted enemy stands still, Spookyface gains stealth. Casting Hide and Seek does not reveal Spookyface.

W: Noises in the Woods: Places a stealth trap. When an opponent steps on the trap, Spookyface may teleport to that location. If Spookyface teleports, he arrives with an explosion and is teleported back from whence he came after 3 seconds.

E: Paranoia: Spookyface launches himself onto an enemy and becomes untargetable. After 10 seconds or upon reactivation Spookyface erupts from the enemy, dealing damage and terrifying them. If Spookyface casts this ability while out of sight, he gains stealth until reactivation.

R: The Hauntening: Teleports to target location and creates a large aoe where enemy units within are stealthed against their teammates and have nearsight.