Just played a really weird endgame in a Shaman vs Warlock arena match at 7 wins.
On turn 8, I'm down something like 20 health to 6, but he has no minions and almost no hand and I have a couple minions out. My hand is Alexstrasza, Unbound Elemental, Lava Burst, Stormforged Axe.
On turn 8, he plays some crappy minions. I play my Unbound and Stormforged Axe to kill them, but this puts me at 4 health, and with only 8 mana to spend next turn.
On turn 9, he plays Ysera. I manage to kill it while retaining board control and bringing him down to 11 health (thank you based Flametongue Totem), but I have to use my Lava Burst, which again leaves me with 8 mana next turn. I also played another Unbound on this turn.
On turn 10, he plays a few minions and then uses
Nightmare on his Sen'jin. I can't get through it without losing my entire board, and I can't play Alexstrasza, so I play Defender of Argus, giving me two huge Unbound Elementals, and pass.
On turn 11, his Sen'jin dies to Nightmare. He topdecks Azure Drake, which draws him a Hellfire, so he wins.
I cried.