Double familiar beam damage
What changes
Lil Brimstone keeps its charge-and-release firing pattern. The upgrade strengthens the familiar's beam without giving Isaac the Brimstone collectible.
How to approach the setup
Charge while moving into a safe lane, then release with the familiar lined up on the target. Allow for its trailing position when aiming around rocks.
A practical suggestion for this pair. Check the rest of your inventory and the room before relying on it.
The caution to remember
A stronger beam still needs to hit. Do not confuse the familiar's position and charge with Isaac's own shot origin or an instant automatic laser.
What this teaches about a run
Improved damage and reliable positioning work together. Use a stronger helper without giving up the space needed to dodge.