Mortal Blow | Divinity Original Sin 2 Wiki

Targets killed by this have their corpses explode, which means you can't use source vampirism on the body (or most other skills that target corpses).

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amazing to combo it with other skills for elf rogue/dual wield assassin characters like Sebille
Before combat: use living on the edge + have your teammates or other party members attack you until you have 1 point of vitality, regenerate physical and magical armor
When in combat: flesh sacrifice for +10% damage, death wish for +99% damage, chameleon cloak for double damage, position behind the back of enemy for crit = insane damage then 1 ap huge health potion to get back vitality probably need adrenaline too

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If your target ends up with <20% hp after you use this skill, it will instantly die.

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Garbage for a skill that takes 3 source points.

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"The Mortal Blow Health Treashold is calculated before the actual attack damage" Yea this makes it alot worse than I thought.

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you know, if your fighting a boss who has, like, 50,000 health, and you get him down to like, 9,000 or something below that, BOOM! He is dead! DEAD! Now that is good for fighting bosses.

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Good Combo with apotheosis before doing so: Turn 1: mortal blow - fan of knives - cloak and dagger Turn 2: daggers drawn - a level 5 spell from any of the 4 magic classes (pyrokinetic, aerotheurge, hydrosophist, and geomancer) Turn 3 (optional): fossil strike - fireball

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If this was pierce damage then maybe it'll be somewhat useful and fun to use. Right now, it's garbage.

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Tested with Guerilla, does not stack.... This skill is weakers than Daggers Drawn in pure damage

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This skill is a rip off.

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Come to think of it, this skill is not as powerful as it seems.
Yes, you get 280% damage for 3ap(chameleon cloak+mortal blow), the special effect [hit enemy(vitality >20%) with this skill and its vitality drops below 20%, the target instantly dies] ignores armor,but it cost 3sp and can only be used once per combat.
For those who don't use scrolls, to max out one turn damage, skin craft(combine with adrenaline&flesh sacrifice) is essential, so if you want to use mortal blow,you will also need apotheosis, which means you get 280% damage for 5ap(apotheosis+chameleon cloak+mortal, a little more than 280% actually as apotheosis give 5 finess),only 30% more damage than two and a half basic attack.
For a 4ap rogue one turn maximum damage(skip the next turn as a result),backlash(85%)+overpower(150%)+adrenaline+flesh sacrifice+crippling blow(115%)+skin craft+adrenaline+flesh sacrifice+overpower+crippling blow deals 615% in total.
Meanwhile Apotheosis+adrenaline+flesh sacrifice+backlash+overpower+skin craft+adrenaline+flesh sacrifice+backlash+chameleon cloak+mortal blow only deals 600% in total.
Yes,like other scoundrel skills, mortal blow can backstab.
BUT in the late game, the base damage of a dagger is about 55% that of Two-Handed(82.5% when duel-wielding. One-handed weapon is about 64%, 96% when duel wielding. Staff, crossbow are only a little less than two-handed, almost the same), meanwhile other class can reach 90% critical chance. For a 22 level character,20% from weapon,15 from 15 attributes in wits(LV22, 45 attributes in total,30 to finess), 10% from hot head,12% from peace of mind, 14% from eternal artifact enchanted necklace with giant flame rune,5% from wits in rings each(10%),5% from wits in trousers, 4% from belts, that's 90% in tota (Although in order to get all these equipment, you need to check out merchants many times).
Look back at scoundrel skills, only 3 vitality-damaging skills' damage/ap ratio is more than 50%/ap(basic attack), while two of them cost 2 or more source. 4 equal to that ratio. 3 less than that. None has hard control effect like knocked down(terrified may count but it's resisted by magic armor and Terrifing Cruelty has the WORSTt damage/ap ratio while costing 3ap).Don't forget dagger has the shortes range and all scoundrel AOE skill damage is a joke compared to magic. They really should think about buffing scoundrel skills.
Return to Mortal Blow. It needs a CD, Less SP COST(Considering dagger's damage, maybe 1sp lIke overpower). (NO ADDING AP COST BULLSHIT thank you.)

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Guerrila, Hot Head, BackStab, Chameleon Cloak, Thick of the Fight, got low HP + Death Wish, got that combo and dealt 10k HP. As long as you can calculate the damage. This would be insane.

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This skill is decent, but when you compare it to pretty much anything that costs 3 SP you will realise that whoever balanced scoundrel was afraid that it will become too strong. This skill basically deals 280*(~2)=560% DMG, single target. Meanwhile you have huntsman skill with his arrow storm which deals 1600% dmg in an AREA for just 1 more AP. And that's BEFORE applying high ground damage. AND you can use it multiple times with Apotheosis (and also can reset cooldown with Skin Graft), unlike mortal blow which is limited to one use per combat.

Or, you know, you can look at any 3 SP elemental skill except may be hydro, but at least it applies CC.

Or, also, a 3 memory warfare skill which costs only 2/1 AP/SP and will deal a*****ton of damage as long as your armor is bigger than your enemies armor.

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Apotheosis and this. Of course you can set up this combo with other things to make the most out of it.

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Absurdly good as an elf with a few polymorph points and The Pawn talent. Either use a 1 AP movement ability or move behind the target for free, hit once, adrenaline, hit again, flesh sacrifice, chameleon cloak, mortal blade for double damage with guaranteed crit.

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Don't forget you can Backstab with this skill.

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how can i get it? do i have to kill Gwyndian Rince? i saved him once... dont know where he is now

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You can use this to guarantee a single kill at the start of the battle 90% of the time.
Mortal Blow, Guerrilla, Backstab is just flat out insane. (By this point you should also have max weapon skill and close if not max finesse)

I think it also kills them as long as you get them below 20% with the attack, but I heard that on a youtube video. I haven't tested it myself.

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Im dealing 3k damage with this skill, really good opener that eliminates single opponent instantly

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but you can also use it before the game start by sneaking/going invisible.

furthemore if you're invisible the dommage are double.

and 20% erly isnt much, but its a late game skill with late game npc, i dont know yet but what if they have like 5000hp ? then 20% is 1000hp, this skil is a really good pre/engage and finisher (especialy in late game)

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3 SP???? Really?? If someone has 20% of HP - i will never waste 3 SP on it.

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