Try to dodge Blade's Reach to deny him a long range cast of Umbral Trespass.
If Brand kills an enemy while it is ablaze he regains mana.
Blitzcrank's Rocket Grab only pulls the first enemy target it encounters.
can be cast at a great range.
Keep Devour's range and cooldown in mind and position accordingly! The chains slow and deal initial damage and, after a delay, stun those who are unable to break them.
Try warding key locations to keep track of his movement.