Controlled laser ring
What changes
The ring replaces the controlled tear. Damage comes from its edge; an enemy sitting inside the empty center is not being hit by the ring.
How to approach the setup
Keep the ring's edge over the target while moving Isaac away from incoming attacks. Practice separating movement from aiming.
A practical suggestion for this pair. Check the rest of your inventory and the room before relying on it.
The caution to remember
Centering the circle on a small enemy can miss it. Other weapon replacements can change this attack, so this pair is not a prediction for every larger build.
What this teaches about a run
The visible outline is the important part of this weapon. Track contact with the edge rather than the circle's center.
Other reviewed pairings
Brimstone + Tech XTech X's moving rings become Brimstone rings instead of a straight beam.Brimstone + Mom's KnifeA charged knife attack also launches a stream of extra knives across the room.Brimstone + HaemolacriaHaemolacria's arcing tear bursts into Brimstone beams when it lands.Abyss + BrimstoneConsuming a Brimstone pedestal with Abyss creates a larger gray locust in Repentance, without a Brimstone beam.