Holy Lance

penetrating

Spells that Penetrate

Black Hole

A slow orb of void that eats through all obstacles

Black Hole with Death Trigger

A slow orb of void that eats through all obstacles and casts another spell as it expires

Chain Bolt

Fires a mysterious bolt that jumps from enemy to enemy

Holy Lance

A fast-flying, penetrating lance that glows with power

Magic Guard

Four guarding lights rotate around you for a time

Big Magic Guard

Eight guarding lights rotate around you for a time

Freezing Gaze

A heart-freezingly sinister aura

Rock

Create a mighty rock out of thin air

Summon Tentacle

Calls a terrifying appendage from another dimension

Summon Tentacle With Timer

Calls a terrifying appendage from another dimension! Comes with a timer

Return

After a period of time, you'll be returned to where you cast this spell

White Hole

An orb of positive energy that destroys everything in its path

Worm Launcher

Summons a giant worm to cause havoc for a moment!

Circle of Buoyancy

A field of levitative magic

Circle of Displacement

A field of teleportative magic

Explosive Detonator

All nearby explosive spells cast by you instantly detonate

Delayed Spellcast

A static, magical phenomenon that casts 3 extra spells after a short while

Projectile Gravity Field

Projectiles caught within the field are attracted towards its center

Projectile Thunder Field

Projectiles caught within the field transform into blasts of lightning

Projectile Transmutation Field

Projectiles caught within the field transform into harmless critters

Omega Black Hole

Even light dies eventually...

Omega White Hole

A massive orb of positive energy that destroys everything in its reach

Vacuum Field

Sucks nearby projectiles and creatures into the middle of the field instantaneously

Long-Distance Cast

Casts a spell some distance away from the caster

Teleporting Cast

Casts a spell from the closest enemy

Warp Cast

Makes a spell immediately jump a long distance, stopped by walls

Spells that can hit multiple targets, but each only once.

Holy Lance is a projectile type spell that is one of two spells that inflict Holy damage, the other being SPOILER: Omega White Hole , in addition to a respectable explosive effect. The projectile resembles an ornate, golden arrow, and travels in a slow, arcing trajectory. Beware, this projectile has Friendly Fire enabled, and can be as deadly to you as to your foes.

While this can be considered a more powerful version of Glowing Lance - with a similarly long lifetime (up to 5 seconds) - it lacks Glowing Lance's ability to fly through powder materials. Instead, Holy Lance can penetrate entities - meaning it can hit more than one target (but only once per target). It is relatively slow-moving, and has no minimum speed and so won't die if it becomes stationary in mid-air.

These qualities make it an ideal projectile to use for constructing Trigger Loops, and the fixed lifetime makes it easy to turn into a infinite lifetime wisp.

Tips

Holy damage is extremely useful as most enemies (including bosses) lack immunity to it.
Extremely dangerous to player since it has friendly fire.
Quantum Split can make it easier to deal damage with its explosion, as the red and blue copies will have the built-in entity penetrating effect removed, allowing them to detonate on impact.
A single copy of Explosive Projectile or Clusterbolt is enough to boost the Explosion done by Holy Lance to 325.
This spell can penetrate entities (meaning it won't die on collision with them) but does not have a piercing effect. This means damage is dealt only once (any attached trigger will fire only once) per entity.
Combining with Aiming Arc (or Circle of Buoyancy) gives fine control over the slow-moving projectile's path.