I find that Sundial can be used in place of an hourglass+heal.
It adds one extra turn for you to regenerate health and draw an extra cards if you are close to dying, but if you didn't need its help, then use it on the turn that you would win in combination with miracle, this way the shards will get you to 100 HP and nothing can damage you when it's FG's turn. Then the next turn you can kill for an EM. But if FG has a weapon, then he could ruin it.