The first time I encountered this card, I didn't know that "stable" means "stabilized", I thought it means "can be stabbed". I thought, "Unstable Gas? The gas who can't be stabbed? Aren't all gasses can't be stabbed as well?". Opponent activated it. "Oh, it explodes when it gets stabbed, I see.". Years later I was ashamed when I know what does "stable" mean.