This guide will help you calculate the damage of the Mortal Blow skill in Divinity: Original Sin 2. To use Mortal Blow, a character needs to have at least 5 points in Scoundrel. This means it is typically available to assassins and rouges. It is a single-target skill that deals massive damage to the enemy, if you know how to use it correctly.
To get the maximum damage from the Mortal Blow skill you need to do the following:
- Be invisible or sneaking
- Stand behind your enemy so your daggers backstab
- And your enemy needs to have less than 20% health left after the attack to die instantly
To help you with the calculations I have created a hand Google sheet. You simply enter your current damage, critical multiplier and the full HP of your target and the sheet tells you how much HP and physical armour your target may maximally have to be killed by the skill.https://docs.google.com/spreadsheets/d/197_wutcTIClbttk87zVG8KCSsKdn9YRsA-G5av1HnWA/edit?usp=sharing
You may need to make your own copy of the sheet in Google docs to be able to enter your values. Click on File > Create Copy or Download the sheet. I hope this helps.