KSCJJ-CZ6R9-5R5FH-RBB3T-5SKKB
Thanks to dealbot for the heads-up on this one. I confirmed the code through the Orcicorn web site, where it shows an expiry that finished earlier today, but I tested in my own SHiFT account and it's still working. So, get in quick while you can!
You don't need to own the game to redeem the keys. These are not codes to unlock the game, they're only for unlocking chests to receive special loot. Direct link to redeem at SHiFT is https://shift.gearboxsoftware.com/rewards, or redeem through your respective platform (multiple redemptions possible this way).
(Let's try that again, shall we? Only, this time I'll actually include the code…)
Direct link;
https://shift.gearboxsoftware.com/rewards