An example of how to implement an incremental status with behavior scripting (Divinity: Original Sin 2 - Definitive Edition Modding) (no incremental turn version).

MyMod_Statuses.gameScript

INIT

EVENTS

/*
Apply MYMOD_PAIN_APPLY with a skill or whatever is appropriate (weapon, script, etc).
This status should have the amount of turns you want the actual status to be, i.e.:
	MYMOD_PAIN_APPLY,100,3

MYMOD_PAIN_1 to 5 should have increasing StackPriority properties, 
so they can override one another. Ex:

new entry "MYMOD_PAIN_2"
type "StatusData"
data "StatusType" "DAMAGE
using "MYMOD_PAIN_1"
data "StackPriority" "2"
*/

EVENT MyMod_ApplyPain
VARS
	CHARACTER:_Target
	LIST<STATUS>:_RemoveList
	STATUS:_Result
ON
	FetchCharacterApplyStatusData(_Target, MYMOD_PAIN_APPLY)
ACTIONS
	Set(_Result, null)
IF "c1"
	CharacterHasStatus(_Target, MYMOD_PAIN_1)
THEN
	Set(_Result, MYMOD_PAIN_2)
	ListAdd(_RemoveList, MYMOD_PAIN_1)
ELIF "c1"
	CharacterHasStatus(_Target, MYMOD_PAIN_2)
THEN
	Set(_Result, MYMOD_PAIN_3)
	ListAdd(_RemoveList, MYMOD_PAIN_2)
ELIF "c1"
	CharacterHasStatus(_Target, MYMOD_PAIN_3)
THEN
	Set(_Result, MYMOD_PAIN_4)
	ListAdd(_RemoveList, MYMOD_PAIN_3)
ELIF "c1"
	CharacterHasStatus(_Target, MYMOD_PAIN_4)
THEN
	Set(_Result, MYMOD_PAIN_5)
	ListAdd(_RemoveList, MYMOD_PAIN_4)
ELIF "!c1"
	CharacterHasStatus(_Target, MYMOD_PAIN_5)
THEN
	Set(_Result, MYMOD_PAIN_1)
ENDIF

RETURN(_RemoveList, _Result, null)