Use magnetic force

You were confident in your guess that it was indeed a natural disaster field card and despite the threat of losing the game if you where wrong you used the card in phase 4.

Emma did not seem happy and her reaction made it clear that your guess was correct.

And as you activated the field card and 3 of her creatures werelost (altough her phoenix came back) you could see a tinge of fear on her face. She was probably starting to regret that bet now.

She only had 1 card in hand compared to your 3 (altough one of those would allow you to draw an extra card every turn). And only 3 out of her 5 creatures where still playable compared to your 4/5. And one of those would most likely die in the next combat encounter.

So you spoke to her: if you surrender the game now I won’t be as mean to you with the suprise.