Vilemaw occasionally goes invulnerable & untargettable

On Twisted Treeline, Vilemaw will occasionally go untargettable and will not take damage, but will still deal damage and use his abilities.

Step 1) Start Vilemaw with a ranged character (anyone who has an attack/ability range longer than Vilemaw's melee attack range) Step 2) Vilemaw will begin attacking with his ranged auto attack(the web spit) Step 3) Move closer to Vilemaw until you are in range of his melee auto attack Step 4) Vilemaw will become untargettable & invulnerable for anywhere between 1-4s and will continue using auto attacks and abilities.