Shoop Da Whoop!

Effects

When used, the next shot will fire a large, Brimstone-like laser in the direction Isaac shoots that deals double Isaac's tear damage. If Isaac is already shooting, the item immediately activates in that direction.
- The laser hits up to 13 times.
- (Added in Afterbirth †) Status effects can be applied by the laser.

Despite the laser looking very similar to Brimstone, it doesn't share most of the Brimstone-specific interactions.
This item can drop from Envy.
Can still be used while blindfolded.
This item synergizes extremely well with items that significantly increase damage such as Polyphemus and Ipecac.

(Added in Repentance) 4.5 Volt: Allows the item to be charged and used multiple times in a room, which can help with dealing extra damage in enduring fights like most endgame bosses.
9 Volt: Can be used once every room, and more frequently in Challenge Rooms.
(Added in Repentance) Book of Virtues: Spawns white wisps in the outer ring. The wisps also fire lasers when Isaac uses Shoop Da Whoop!. The lasers deal 7 damage per tick (BUG: 3.5 if Isaac has BFFS!), and can hit up to 10 times for a total of 70 damage. Multiple lasers can hit the same enemy.
(Broken Remote) Broken Remote: Since item charges aren't expended until Isaac chooses a direction to shoot, the player can teleport across the floor indefinitely.