Irianic Projector

Wondrous item, very rare - Requires installation in a building
An array of gold and bronze beams, rings and filigree, some 6 metres wide, shaped roughly like the petals of a flower. Sturdy and heavily built in the centre, before flowing out to become almost woven
Once per day at midday, if the projector is exposed to a spell that restores hit points of 3rd level or higher, or an equivalent source of positive energy,

All creatures within 100ft regain 1 hit point

All creatures within 1 mile make Constitution saves against disease with advantage for the next 24 hours

All plants within 1 mile have their growth rate tripled for the next 24 hours