Board Thread:Fun and games/@comment-27853587-20161014041559

You get the quote:

Alphabet improv numbers edition 2: http://plantsvszombies.wikia.com/wiki/Thread:696684

For this one, it goes like this: 0-9, A-Z, then it repeats. Since this post starts with Y, the next letter will be Z.

Credits to Microphone DJ 125 and 1033Forest.  