How to:
There are two types of cannon events: attacking the cannon and defending the cannon. Attacking the cannon is what you want in terms of farming. Defending is during the pre-event for the meta after destroying the 3 pylons and turning all the Spare Parts. Attacking only occurs any time the pre-event is not up. This means that when all the Spare Parts are filled and the pylons are up/destroyed then it will stop, but continue during the raid of the Moon Fortress and beyond.
Priority of events:
Emm → Cannons → Meta (not including pre) → Champ Shark → Choya → Maggin
Troopmarshal
Location 1
Agasaya
Location 2
Agasaya
Location 3
Agasaya
Location 1
Asphodel
Location 2
Asphodel
Location 3
Asphodel
Location 1/2/3
Cabochon
Location 1/2
Enbilulu
Location 3
Enbilulu
X
X
X
X
X
X
X
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X