Shrunken Heads can have 1-3 bonuses of +1-3 to specific Necromancer skills and can only be worn by Necromancers. They also have % Chance to Block and Defense making them a replacement for Shields. You normally wear Shrunken Heads with a Wand. You can't wear two Shrunken Heads at the same time on the same weapon tab.

Auto Mods
Auto Mods are mods that "automatically" show up on all versions of an item, whether it's magical, normal, low quality (Cracked, Crude, Damaged, Low Quality), or rare. One Auto Mod from a given group is chosen for the item based on a random number and the level of the item (and the requirements of the Auto Mod). Many Class-specific items contain Auto Mods while others contain spell/skill bonuses. [Learn more]

	Min/Max Defense	Level Requirement	Min Strength	Durability	% Block	Sockets	Type	Quality Level
Minion Skull	95-139	44	77	20	[3] 23%	2	Light	59
Hellspawn Skull	96-141	50	82	20	[5] 25%	2	Light	67
Overseer Skull	98-142	49	91	20	[8] 28%	2	Light	66
Succubus Skull	100-146	60	95	20	[10] 30%	2	Light	81
Bloodlord Skull	103-148	65	106	20	[12] 32%	2	Light	85