Mixed:

With this version, you can use either the string-based or list-based target lists.

String based:

This version should contain target elements separated by a comma in a string/text form.

can-target: element1,element2,element3

List based:

This version should contain target elements in a YAML string list.

can-target:
    - element1
    - element2
    - element3
# same as
can-target: [element1,element2,element3]

Target elements:

• self or caster
• player or players
• invisible or invisibles
• nonplayer or nonplayers
• monster or monsters
• animal or animals
• mount or mounts
• rider, riders, passenger or passengers
• castermount or selfmount
• casterpassenger or selfpassenger
• entitytarget or mobtarget
• markerstand, markerstands, markerarmorstand, or markerarmorstands - Since 4.0 Beta 16.
• Entity Type
• Entity Type Tags - Since 4.0 Beta 16. Must start with # (e.g. #undead).
• Game Mode - Since 4.0 Beta 14. When listed, players in that game mode will be valid targets for these spells. This does not change the behaviour of the player/players options, which still only allow players in adventure and survival.