You'll receive a TWITCH account.
Link it to your game account to claim the following items:

1. Warframes: Styanax, Gara Prime, Sevagoth, Ember, Saryn Prime(N), Nyx, Valkyr Prime(N) + 8 slots
2. Guns: Gotva Prime, AX-52(N), Baza(N), Cassowar(N) + 5 slots
3. Armor Sets: Syrinx(N), Naktavyre(N)
4. x5 Archon Shards: x3 Tauforged, x2 Simple
5. x26 Forma
6. x3 Forma: Umbra, x4 Forma: Umbra(BP), x2 Forma: Omni
7. x300 Creds: Noras Mix 7,8,9 (can be sold for 1.500.000 credits)
8. {OTHER ITEMS} x45 Pathos Clamps, x50 Enigma Girum, x60 Vitus Essence, x2 Requiem IV Relic, x50 Universal Medallion, x10,000 Kuva, x5 Riven Cipher, x2 Requiem Ultimatum, x8 Brilliant Eidolon Shard, x10 Nitain Extract, Orokin Reactor, Orokin Catalyst, x78 Relics, x15 Debt-Bonds, Lazulite Toroid, Seriglass Shard, x3 Voidplume Pinions, x70 Corrupted Holokeys, x5 Zenith Granum Crowns, x900 Nakak Pearls, x30 Live Heartcells, x10 Eidolon Phylaxis, x10 Infested Catalyst, x10 Breath of the Eidolon, x200 Vosfor, Random Voca, x38 Random Resource, x2 Random Forma, x8 Random Arcane
9. {Mods} x4 Tomes, x2 Oull, Tennokai, Elementalist, Cannonade, Ember, Requiem, Trinity, Rhino, Nyx, Nova, Frost, Saryn, Encore, x2 Potency, x2 Antivirus, Isleweaver, x3 Riven, Bond, Oberon
10. {Resources} Drop randomly 3pcs: Forma, Forma: Omni, Umbra, Stance; Warframe/Weapons Slot
11. {Adapters} Drop randomly 11pcs
12. {Decorations} x19 Domestik Drone, x6 Shawzin, x4 Display, x17 Glyph, x16 Scene, x10 Fluffy, x18 Sculpture(or Noggle), x28 Another Deco

NOTE:
!!! Claim items promptly post-purchase; they may expire.
!!! Unlink the Twitch account once all items are collected.
!!! Items hidden after 6 months are still claimable.

YOU CAN ONLY LINK A TWITCH ACCOUNT ONCE EVERY 7 DAYS — DO NOT BUY MORE THAN 1 ACCOUNT PER WEEK!
If you have previously received these items, you will be able to get them again with each purchase, unlimited times.