Warhammer of Bloodlust

You gain a +2 bonus to attack and damage rolls
made with this hammer.
Requires attunement.
Whenever you hit a target, take another attack
and roll a d6.
On a 5-6, strike your target again.
On a 3-4, strike another random target within range.
On a 1-2, strike yourself.
These attacks deal an extra d12 force damage.