From the Jaws of Defeat

From the Jaws of Defeat deals 5 damage to target opponent. If you have exactly 1 life, it deals 20 damage to that player instead.
Kwirg barely evaded the dragon's maw, but so empowered was he by his exhilarating escape
from its gnashing blades, his fire spell burned a thousand times hotter to melt the sulfurous beast down to scaly slag.