The Aeternae myrmidon was manufactured by House Vyre at the behest of House Ellowuyr as compensation for an unknown agreement. Aeternae myrmidons feature some of the latest Vyre innovations in warjack weaponry. They wield a pair of Distortion Voulges, massive bladed weapons that cause their enemies to reverberate with arcane energy and be repelled with each successful blow. This upgrade kit includes head, arms, and weapons.

The Aeternae is a heavy warjack that can be added to any Retribution of Scyrah army. Aeternae offer a combination of powerful long-range armor piercing attacks with a potent melee presence. Combined with accumulator Ellowuyr they are extremely efficient. This add-on kit must be combined with a Banshee/Daemon/Sphinx kit (PIP 35034) to be a full model. While the Aeternae was previously offered as a full model kit, this release consist of the differentiated pieces as an alternate way for players and collectors to acquire this warjack.