In long games, I could see this even getting to 20 rev counters
It has negative counter synergies and its an ETB effect, so you can play it in a deck like Yarok, the Desecrated
Pay more life, most likely get a more impactful card
The Backup mechanic on Voldaren Thrillseeker seems like it could result in some pretty unexpected combos depending on what abilities are linked to it for example, just within this set, you can use it with the previously revealed Yargle and Multani to deal 20 damage
Update 2-2-2024: Dutch store Toychamp is holding this promotion too, it features the Paradox Rift logo as the stamp on the card
(2010-06-15) When Surrakar Spellblades second ability resolves, you either draw a card for each charge counter on it or you draw no cards at all