This is the most triggering, soul-crushing game of Hearthstone I've ever played. It happened last week in arena, and the full VOD is available in my Twitch highlights.
It turns out that my predictions were true. I was an early naysayer to the "Standard" version of arena, citing that synergy would be too good. Due to arena not having deck restrictions, it would be entirely possible (and now more probable) to draft a deck that was actually better than constructed. Arena has never had deck restrictions, and in the past I've been opposed to even the thought of it. Now, I'm not so sure. Whether it's deck restrictions, more cards on the ban list, reverting to "Wild" arena, or something else entirely, I'm not sure - but something needs to change.
The highlighted game is of course only one of many arena matches I've played since the Un'Goro release. While it's a fairly extreme case of synergy, it's not uncommon to have ridiculous plays. For example, earlier that night an opposing paladin had turn 5 Stand Against Darkness into turn 6 hero power plus Lightfused Stegadon, getting +3 Attack on the adapt. That's +18 damage (15 of which can attack immediately) and a 3/4 beast for 4 mana (6 with the additional hero power). Note that the +3 Attack buff is permanent, making it literally better than Bloodlust here. Keep in mind I'm still talking about arena, where you're largely at the mercy of the draft to determine your success.
The Standard form of Hearthstone arena now is essentially "One-Sided Fist Fights: The Card Game". GG, Blizz.