Stand Alone

Stand Alone is a  passive skill, unlocked at level 14.

In-game
This skill passively gives a multiplicative (to other modifiers) boost to Armor, but the more minions the Necromancer has, the less this bonus becomes, to a minimum of 0 at 10 pets.

This only includes actual attackable pets summoned by either Necromancer skill:, Command Golem, Command Skeletons, Simulacrum,. Other pets and summons do not affect this skill.

Stand Alone is most useful to Necromancers relying on non-pet builds, but can also be of (lesser) use for those with just 1-2 minions, such as Golem, or minions that are not permanently active (Revive, Skeleton Mage), helping to protect the Necromancer while he is not shielded by summoned creatures.