Blood Golem

Blood golems, also known as anima golems, are mechanical creations of Archritualist Kelada, under the Thunder King's command, and were forged in the Throne of Thunder. The small golems serve the great Dark Animus. After its defeat, the blood elves acquired the Dark Animus' power source and began empowering blood golems of their own.

Mists of Pandaria
During the fights on the Isle of Thunder, agents under Lor'themar Theron defeated the Dark Animus and secured its power source within a crystal. Blood elf archmagi were tasked with uncovering the secrets behind the origin of the animus golems' powers, also allowing the elves to empower functional blood golems of their own. The animus' power was adequate leverage for Lor'themar, who had sought to find powerful weapons on the isle to prepare for an uprising against Garrosh Hellscream.

Warlords of Draenor
The blood elves' blood golems make an appearance in Warlords of Draenor. Lady Liadrin fields groups of animus golems to help purge the demonic corruption in Talador and to defend Auchindoun. Magister Astalor Bloodsworn can be found empowering dormant golems at Exarch's Refuge.