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Description of feature request

A config option called 'Beam Pull' which allows you to change the force of the Tractor Beam (pull force).

you could also edit this via a command, maybe looking like

/witherstormmod pullforce set

or something like that. I feel like it would be cool to be able to change more things about the behaviour of the storm.

Already exist. I believe it's in the "tractor beam" part of the world config

Yep, it's called "tractorPullSpeedModifier"