Spirit derives from India lore/culture.
Acheri is pronounced 2 prominent ways: "ach eerie" or "a cheery".
The Acheri is the ghost of a little girl who brings disease, especially to children. The ghost lives on mountaintops and comes into valleys during the night for revelry and to spread disease by casting its shadow over victims. The Acheri will not harm those who wear a red ribbon around their necks.
Forbiddens are very aggressive that can attack everything - including summoner and allies.
Summoning ingredients requires: Red Ribbon.