Stinky the Snail hat

[AndyWizz10]

Can someone tell me how to unlock Stinky the Snail hat on pvz gw 2?I've been looking everywhere on YouTube and found nothing. 

[Cameroid07]

From what I can remember you can only get it from the Century Pack by reaching rank 100 in PVZGW1 you might be able to get it from Rux or CP but I think you can't get it anymore.