PSA: Keep enemy wards out of the Dragon/Baron Pit...or else!
http://i.gyazo.com/06b041f8e9e9c25f8db396d127b195fa.gif
Can't tell you how many times I've taken the Dragon with a simple Tidal Wave/Aqua Prison combo because the enemy didn't drop a Pink and/or Sweeper to keep my wards out of the pit. (In this steal Amumu Smited early as well. Watch the health!)
Don't be cheap, use a Pink! Hell, they could even see me sitting there. There's another lesson to be had for it; if you're going to put vision behind the pit, don't ignore what you see. Kill them, prepare some CC, or pull the Dragon (not Baron of course) out of reach of medium range attacks.
P.S. We lost the match anyway lol. Still had a good time though.