In the Vanilla game, this was only obtainable from Pimon in the Wildlife Exploitation Reserve and after literally years and years of farming both it and this shield I never received one.
Now, however, thanks to the new DLC launched in 2019, Commander Lilith and the Fight for Sanctuary DLC this is now obtainable from the new raid boss Haderax The Invincible in the Withering Deep a sub section in The Burrows.
The Transformer has an incredibly powerful ability. Usually any shock damage received on the player will cause massive damage to the shield and consequently the players health bar.
The Transformer, however, absorbs near enough all shock date received, there are a few exceptions like badass shock skags but what a shield to hold.
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