Use Carrot on Desert. Use coconut trunks as cover, dump damage early, and skip the purple fog trail after half health.
Practical answer firstCatch Needlefish, trade it to the Tourist under the tree, then use the Carrot. Use coconut trunks as cover, dump damage early, and skip the purple fog trail after half health.
How to summon
Catch Needlefish, trade it to the Tourist under the tree, then use the Carrot.
Attacks and stun windows
Roll; poison fog trail.
Solo plan
Keep a safe tree between phases and carry cooked food.
Co-op plan
Spread around separate trunks so the roll cannot pin the group.