Killing an enemy, or hitting a boss, with the third attack in the combo dooms nearby enemies.
Enemies killed by the doom effect will also doom other nearby enemies again.
This can occur up to 3 times, but each time the doom damage is reduced.
This also causes a tombstone to be placed on the ground, but the placed tombstone has no function.
This also dooms the boss itself.
Breach Bonus: 3 / 2 / 1
Base Breach Damage: 200 / 150 / 600
Base Breach DPS: 432
Combo Duration: 2.22 seconds
First Hit: 0.67 (0.47 + 0.2 + 0)
Second Hit: 0.65 (0.5 + 0.15 + 0)
Third Hit: 0.9 (0.75 + 0.15 + 0)
Tags: HeavyWeapon
Notes
Currently, the tombstones that are placed on the ground when killing an enemy using the third hit or with the doom effect do nothing.
Similarly to the Alchemic Carbine, the Tombstone cycles between several visually different attack animations that feature various different kinds of tombstones. This difference is cosmetic.
The doom effect is affected by the affixes applied to the tombstone the player is carrying.
Trivia
Tombstone is featured in the banner for v2.3, aka the Whack-a-Mole Update.