My saved eBay search popped up while I was at work yesterday, and I’m happy to say I have my last Amada Attack Seviper sticker incoming: the Entei Stomp one I was missing.
I’m still missing three Amada promo stickers, but all the set Seviper versions and these amazing Amada Attack stickers will be complete once this one has arrived. 
Greetz,
Quuador