Predator like Stealth/Invisibilty?

does someone know an easy Version to achieve something like a predator Stealth/Invisibility? Another example would be the Nyx Shaow Ability out of AC Odyssey even though I just want a simple Version which doesn’t Need to be perfect…

Tech Art Aid has a great video about this very effect: UE4: Stealth Invisibility Effect (With Distortion) - YouTube