ummmmm...

how do I make it so that when you pick a certain character, you can't pick another character of the same or different class?
like if you pick...
tracker lionel
you can't pick
cadet lionel
page lionel
etc., etc.

Gonna have to be a liiiitle more descriptive than that.

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Mega Tact v1.1
Super Penguin Chef
Wizard Blocks

Answer: Tags!