Heh, just had a generally good event (scoring a critical strike) turn into a disaster!
To put you in situation, it involves the not-broken-at-all [ability]Early Advantage[/ability]!
My [pet]Infinite Whelpling[/pet] "Chronos" totally done and dusted after dealing with the likes of [pet]Graves[/pet], was the last-whelp-standing against an enemy [pet]Lil' Ragnaros[/pet] who also had got his own share of pain.
The odds were grim for me. He had something like 680 health, and my whelpling had little over 200 - so he wouldn't survive being bashed with Sulfuras again!
Having the Speed advantage over him, and a sufficient difference in Health, I was certain that [ability]Early Advantage[/ability] would win me the match (dealing 700+ damage). But then, the first hit was a Critical, for 540...
Just enough to bring him below my own HP, thus negating the second hit.
Needless to say, the hammer did fall right after - as expected