Astronomer's Orbs

Astronomer's Orbs is an Ability in Halls of Torment

It summons 3 orbs that circle the player indefinitely, damaging all enemies that they touch. It is one of the initially unlocked abilities.

Upgrades[]

Name	Description	Unlock Condition
Inner Orbit	Summons an additional orbit lane that spins in the opposite direction.	Chapter I: Haunted Caverns Astronomer's Orbs Mastery II
Electrified Orbs ^{[au 1]}	Orbs deal additional lightning damage based on their movement speed. Orbs can electrify enemies on hit based on movement speed.	Chapter II: Ember Grounds Ability Expert: Astronomer's Orbs
Orbital Shift	Orbs in the original lane move on eccentric orbits. Additional damage bonus depends on the distance between you and an orb.	Chapter III: Forgotten Viaduct Astronomer's Orbs Specialist

↑ Electrified Orbs: Chance to apply Electrify is not affected by any Electrify Chance buff nor flat Movement Speed, only Movement Speed buffs.

Name	Mastery	Description	I	II	III	IV	V	VI	VII	VIII	IX	X
		Traits Astronomer's Orbs Physical, Astronomer's Orbs, Summon, Projectile
Roughness		+0.05 Base Crit Chance (Ability)		✓	✓		✓	✓		✓	✓ ^{[at 1]}
Speed		+15% Movement Speed (Ability) +10% Range (Ability)	✓	✓		✓	✓		✓	✓		✓ ^{[at 1]}
Density	I	+15% Damage (Ability) +15% Crit Bonus (Ability) -10% Area Radius (Ability)		✓		✓		✓		✓		✓ ^{[at 1]}
Mass	I	+30% Damage (Ability) -10% Range (Ability)	✓		✓		✓		✓		✓ ^{[at 1]}
Bodies	III	+1 Orb (Ability)			✓			✓				✓
Material	III	+5 Base Damage (Ability)			✓			✓				✓

Name	Description	Reward
Chapter I: Haunted Caverns Astronomer's Orbs Mastery I	Deal 750 000 damage with Astronomer's Orbs. Quest can be completed on any stage.	Trait Types: Mass DensityTrait Types Mass Density
Chapter I: Haunted Caverns Astronomer's Orbs Mastery II	Deal 1 500 000 damage with Astronomer's Orbs. Quest can be completed on any stage.	Upgrade: Inner OrbitUpgrade Inner Orbit
Chapter I: Haunted Caverns Astronomer's Orbs Mastery III	Deal 3 000 000 damage with Astronomer's Orbs. Quest can be completed on any stage.	Trait Types: Bodies MaterialTrait Types Bodies Material
Chapter II: Ember Grounds Ability Expert: Astronomer's Orbs	Get Astronomer's Orbs to rank 3 to be able to select ability upgrades.	Upgrade: Electrified OrbsUpgrade Electrified Orbs
Chapter III: Forgotten Viaduct Astronomer's Orbs Specialist	Hit enemies 30 000 times with Astronomer's Orbs. Quest can be completed on any stage.	Upgrade: Orbital ShiftUpgrade Orbital Shift

As they are counted as summons, Astronomer's Orbs pairs well with summon-focused items and builds such as the Shepherd's Boon and the Warlock/Mark of Rituals.