Mega Blast

Mega Blast is a secret unlockable activated item added in Afterbirth.

Effects

 * Upon use, Isaac fires a giant, incredibly powerful blood laser, similar to the one used by Mega Satan, for 15 seconds.
 * The beam has enough power to push Isaac backwards while being fired, and will last between rooms, and across multiple floors.
 * While Mega Blast is being fired, Isaac cannot:
 * Open chests.
 * Pick up a Little Battery, collectibles, pills, trinkets, or cards or runes.
 * Pick up the trophy or enter the chest that spawns after defeating Isaac or ???.
 * Sleep in a bed.
 * The laser extinguishes fires, detonates TNT, and destroys poop.

Synergies

 * Homing Tears: Beam curves toward nearby enemies.
 * Rubber Cement: Beam bounces off walls like Brimstone would.
 * Tiny Planet: Beam rotates around the player like Brimstone would.
 * A Lump of Coal: Increases the damage of the laser the farther that it travels. Also colors the laser black and makes it wider as it travels.

Interactions

 * My Reflection: Causes the beam to curve while moving.
 * Proptosis: The beam does massively increased damage at close range but does nearly no damage from afar.
 * Sharp Plug: Fully recharges the item upon use at the cost of 2 hearts.
 * Void: Allows the item to be used every 6 rooms instead of 12 and batteries will fully charge the item.

Seeds
WCB1 YZ39 (First floor Devil Room) TQWA 6TQD (Curse room adjacent to spawn, chest teleports to devil deal) 3KY4 LSVL (Second floor Devil Room) RZL2 6MQ0 (When playing as Eden, and will also start with Godhead) MKNJ 711R (Third floor Devil Room) W3BZ BBB2 (When playing as Eden) PGH7 BMRT (When playing as Eden)