Foundry VTT Dynamic Active Effects The Basics
This video focuses primarily on the spell Bless in the compendium, but you could use the same setup for handling any of the other spells or feats that have been already been created.
As noted in the video you will need MIDI-QOL to automatically apply effects to other actors. You will also need The Furnace if you plan on using any effects that make use of macro calls.
Modules:
https://gitlab.com/tposney/dae
https://github.com/kandashi/Dynamic-E...
https://gitlab.com/tposney/midi-qol