Score

Specify a score range like the vanilla format

• [objective]=[min]..[max]

• emeralds=10..20

• From 10 to 20 score in 'emeralds' objective

Specify multiple score ranges as a comma separated list

• [objective]=[min]..[max],[objective]=[min]..[max]

• points=100..,deaths=..5

• 100 points and onward, and 5 or less deaths.

This method looks at all players online, you may want to specify distance conditions in the executed skill to avoid killing someone who was in the bossfight previously, but is now across the map.