That's Water Tower. You skipped Fire Tower, which was on November 30th.
First off.... what are you trying to fight? Cuz as far as I'm concerned, if you're trying to build a meta team to fight TRag, you can just forget about all the debuffs and go full offense + defense. Leave the debuffing for the weak leechers. For any other fights like Raid events and AQ/GO? They are trivial. Just use whatever you like.