#For referance 

area.[areaname]
area.[areaname].[redstonepower 0-15]
event.attacked
event.advancement
event.bossEnderDragon
event.bossWither
event.falling
event.flyingelytra
event.lava
event.gameover
event.paused
event.connecting
event.disconnected
event.oceanMonument
event.loadingWorld
event.ranch
event.fortress
event.stronghold
event.mansion
event.oceanmonument
event.mineshaft
event.deserttemple
event.endcity
event.igloo
event.jungletemple
event.oceanruin
event.pillageroutpost
event.shipwreck
event.swamphut
event.dripwaterincave (works when there is dripping water inside lake caves)
event.riding.[entityname]
effect.[potionname] (ex: effect.nightVision=visionbeyondreach)
mob.[mobname] ( ex.: mob.wroughtnaut=Boss3)
 
effect.nightVision.-1=visionbeyondreachNether (specify effect in a certian dimension)

Per dimension events:

dimension.[DimensionID] ( set a music to play globally in a custom dimension )
dimension.[DimensionID].[Event] ( ex.: dimension.-11325.sleeping=sleeping )
effect.[potionname].[DimensionID] (ex: effect.nightVision.-1=visionbeyondreach)