Upon purchase, you'll receive TWITCH account.
Link it to your game account to claim the following items:

1. Two Witches (Blue) Banner
2. Cruel Cake Badge
3. Claw Heart Badge
4. Final Feast Banner
5. 200.000 Bloodpoints (x3)
6. Broken Skull Badge
7. Winter Crow Badge
8. Upside Down Gates Badge
9. Rainbow Crow Badge
10. Legion Lanterns Badge
11. Hungry Plant Badge
12. Ruins of Hawkins Banner
13. Mansion Party Banner
14. Holiday Horse Banner
15. Foreboding Rainbow Banner
16. Deadly Garden Banner
17. Vee's Drum Kit Charm
18. Krasue Figurine Charm
19. Dustin's Cap Charm
20. Ruby Cushy Sweater
21. Dead End Banner
22. MiNA Figurine Charm
23. Total: 600.000 Bloodpoints

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.

These items can only be obtained once per account. You will only receive items that you have not received before. To receive items, you must unlink the old twitch from your game account.