INVISIBILITY rules, spells, scenario

Merry GLOGmas to you @inconspicuousal

Invisible creatures push the limit of what most rule sets can handle and get handwaved with disadvantage/advantage or get mushed into rules about hiding and stealth. I'm going to mush them in a way that I like.

INVISIBLE creatures are undetectable without enhanced senses (not sight) and therefore cannot be attacked directly. Melee attacks from invisibility always crit (how could they not?).

Exceptions:

- Can be attacked immediately after making a melee attack

- Can be caught in an area of effect attack

- Medium or heavy armor makes enough noise to be detected

PROTECTION FROM SIGHT: the target is INVISIBLE for [sum] X 10 seconds.

BREATH TO VISIBILITY: the target is INVISIBLE while holding their breath. This effect lasts for [sum] minutes.

CONSUME LIGHT: the target reflects no light. In shadows or dim light this grants INVISIBILITY. touching a light source however briefly extinguishes it while this effect is active.

A small town nestled in the corner of a wood. A shrine to the town folk's ancestors lies in a small glade. Offerings of food and incense are made there regularly.

A new arrival, a retired adventurer, has made his home here mere months ago. He lives in a small bit on the edge of town.

Mason Chen: Village elder, slow to pass judgement and weary

Rebecca Wen: Sister of the deceased, Julia Wen. Quick to blame Dev.

Dev: retired wizard who has hung up his robes for good in search of a peaceful life.

Oni: vicious glutton that has been preying on the villager's offerings. The Oni has taken to tormenting the villagers and has recently committed murder.

Town Center: NPCs are gathered at the center of town. Rebecca's sister has gone missing and tensions are high. Rebecca is skeptical of the newcomer Dev and his strange past. Now there's a blood stain near the well.

Shrine: Julia's remains can be found here. She appears torn by claws. 

Abandoned Temple: The Oni has moved in here. Bits of old offerings litter the floor.

Dev is a powerful wizard and knows PROTECTION FROM SIGHT. He could likely figure out what is happening if he could get a level head. PTSD and the villager's grief keep him flustered and defensive.

The Oni is an ogre that can become invisible when it holds it's breath. 

Without intervention the villagers will blame Dev and take torches to his hut. Dev will use invisibility to leave and cut his losses. The Oni will continue it's reign of terror.