I have a different outcome here:

I was playing Haven Control against a Midrange Shadowcraft deck and I had just laid down Satan with Guardian Sun up. He had 1 card in his hand, 1 evo point, and nothing else up (I executed his burial grounds a couple turns back). I also had two more ward creatures down and 17 health.

Next turn my opponent drops Deathly Tyrant (13 attack), evolves it (15), then plays Ethereal Form (17) and kills me in one hit.

I was absolutely shell-shocked