What could have been a very frustrating loss for me was dispelled by how marvelous the win actually was.
I am playing against Token Druid with my Elemental Shaman. I've been holding off my opponent rather well, even managing to hex a Bittertide Hydra. My opponent goes all out on a final push, with a Finja proc, Bloodsail Corsair + Patches, a Second Bittertide Hydra, and Mark of the Lotus. My opponent is left with one card after this.
My turn, I have the option of playing Kalimos or Al'Akir (thanks, Discover), among a few other cards. I have to play Kalimos to clear the board, leaving a 9/6 Bittertide Hydra. I have only 5 more damage on the board, so I cannot kill the Hydra.
Opponent's turn. Draws a card, empties two card hand with Savage Roar -> Savage Roar -> Hero Power for exact lethal.
Thing is, my opponent needed EXACTLY Bittertide Hydra to pull this off. If Hydra didn't have at least 8 health, I coul trade it off the board. If Hydra didn't have at least 8 attack, my opponent would miss lethal and I could maybe bounce back to win the game with Al'Akir. If Bittertide Hydra costed more, my opponent would not be able to build as big of a board to force my Kalimos.
All that considered, this win for my opponent was pretty epic (get it, because Bittertide Hydra is an epic).