Early game · first 8 minutes
Place Entangling Thorns where Rat King stands beside the wave. Stand away from your lane partner so Scrap Grenade cannot hit you both.
Ivy vs Rat King
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Mid game · Walkers
Use Stone Form as Rat King starts to slam his banner down near you. Its protection lets you avoid damage, and landing beside him can stun him before he fires again.
Late game · Patron
Use Air Drop to carry a teammate to one side of Rat King’s group after he slams his banner down. Choose a spot close enough for your other teammates to help.