- 2 (450 XP)
Ephemeral. The will-o’-wisp can’t wear or carry anything.
Incorporeal Movement. The will-o’-wisp can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.
Spellcasting. The will-o’-wisp’s spellcasting ability is Wisdom (spell save DC 12, +4 to hit with spell attacks). It has 5 mana, a mana limit of 1, regains all expended mana when it finishes a long rest and regains half its total mana (rounded up) when it finishes a short rest, and knows the following spells:
At will: invisibility
Variable Illumination. The will-o’-wisp sheds bright light in a 5- to 6-meters radius and dim light for an additional number of feet equal to the chosen radius. The will-o’-wisp can alter the radius as a bonus action.
Consume Life. As a bonus action, the will-o’-wisp can target one creature it can see within 1.5 meters of it that has 0 health and is still alive. The target must succeed on a DC 10 Fortitude saving throw against this magic or die. If the target dies, the will-o’-wisp regains 10 (3d6) health.
Shock. Melee Spell Attack: +4 to hit, reach 1.5 m., one creature. Hit: 9 (2d8) lightning damage.