I recently was beaten by a card combo which left me scratching my head, as when I look at the cards it seemed to me that we should both have died.
Shadowtouched Kvaldir
Tree of Life
These two cards were used in combination they had the following wording.
Battlecry. Your next healing effects do damage instead.
Restore all characters to full health.
The inverse of restore all characters the full health is, reduce all characters to zero health.
My opponent health was restored but mine was reduced to zero along with all characters on the board.
Surely he should have died as well ?