Divinity: Original Sin 2 brings players together in a strategic form of cooperation that isn't found in most games. When launching a new co-op game, players must create their characters and this means choosing skills. Not all skills are created equal, and as players level up in the campaign, they will gain access to new skills that can do more than good.
While these skills are great in battle, they can often lead to dead allies and sour attitudes. It's sometimes best to leave these skills off the battlefield and away from where they can deal harm.
10 Supernova
Pyromancies are a powerful form of magic in Divinity: Original Sin 2. They have the capability to ignite oil and poison surfaces while also catching enemies ablaze. Many of these skills can cause great harm to allies, but one of the most harmful is Supernova.
On top of dealing damage to allies, Supernova also damages the player who uses it. Since many battles will lead to players getting grouped together, this skill can be a tricky one to use. Players without their magic armor will be set on fire and wishing it wasn't used.
9 Global Cooling
The Hydrosophist skill tree is wonderful for its healing abilities, but its ice abilities can be rather deadly for ally and foe alike. The skill Global Cooling is one of those more unfriendly skills that can lead to a quicker death for allies than players would like.
This skill freezes every liquid surface in its area of effect and deals damage to every ally and enemy. If the damage wasn't bad enough, the icy surface can lead to allies slipping and getting knocked down. This spells bad news for allies who may get attacked by enemies without being able to fight back.
8 Contamination
Like Global Cooling, the Contamination skill has a wide range of effect that only gets bigger when talents like Far Out Man get involved. This skill shoots poison out of the player that will hurt enemies and heal undead allies.
Luckily, living allies won't get affected unless they are standing in liquid. This skill also turns all water and blood surfaces into poison. It has the same effect on clouds, so allies may want to stay clear of those as well.
7 Worm Tremor
Worm Tremor is yet another skill that has a woeful effect on allies that players may want to avoid. Coming from the Geomancer skill tree, this skill has a large area of effect and deals 50% Earth damage to all characters caught in the area, and inflicts poison damage.
This skill also prevents characters caught in it from moving or teleporting. This can spell bad news for teammates but is excellent against enemies.
6 Chain Lightning
Chain Lightning sounds like a cool idea, but it can hurt allies terribly and possibly even stun them. This ability is exactly how it sounds. It shoots a massive bolt of lightning that can fork up to eight different characters. It also deals 150% damage to each character caught in its blast.
This can spell bad news for allies who are lacking magic armor and can leave them shocked or stunned. Shocked would at least be okay since it only takes away an action point.
5 Infect
Necromancy is great when wielded properly, but there are a few skills that might be better avoided when playing with friends. One of these abilities is Infect. It causes a disease to infect the target which then spreads to all nearby characters.
This can spell disaster for allies since disease causes a decrease in constitution and attack power. This effect lasts for two grueling turns, which is good for infected enemies but allies will probably be hating the character who cast it.
4 Black Shroud
Another necromancy skill that is terrible for allies is Black Shroud. This skill causes cursed smoke to cover an area and suffocates all characters caught within. The suffocating status effect isn't even the worst part about this ability, the curse is.
Players who get cursed cannot be healed anymore. Rather, healing ends up hurting them and can even get them killed. This will cause players to have to waste action points to bless each ally that is caught in the smoke.
3 Ice Breaker
Ice Breaker is nothing short of a magnificent looking ability, but as great as it looks, it can be just as harmful to allies as it is to enemies. This ability breaks all ice within its area of effect, setting of a chain reaction that deals water damage to every character caught in it. This ability also sets the chilled status effect.
For those who don't know, chilled causes a decrease in movement speed and dodging. It also causes a decrease in water and air resistance. In other words, enemies who use the Hydrosophist skill tree will deal more damage to chilled allies.
2 Impalement
Going back to the Geomancer skill tree, Impalement is terrible for allies for multiple reasons. First, it damages everyone caught in its area of effect, dealing damage to each of them. Second, it sets crippled on everyone hit by it who isn't protected by their physical armor.
This means they won't be able to move. Third, Impalement brings oil with it. Now, any ally who isn't already crippled is slowed and can't move as far without spending more action points. That is all without mentioning that any nearby fire surfaces could cause an explosion.
1 Reactive Armor
If a player has an absurdly high physical armor then the Reactive Armor skill can deal a lot of damage. The only problem is that this damage is dealt to enemies, allies, and even the character who cast it.
This ability has a smaller area of effect, but the damage is entirely based on the amount of armor that the player currently has. This can cause the ability to deal massive damage to allies caught in the blast, plus the fact that it hurts the user is a huge negative as it will allow enemies to more easily get to their health.