Thought I'd add a couple.
Earth's landmasses are being pushed back to make a supercontinent and Hal keeps them apart.
A Green Lantern Power Battery has turned the Sun green with its energy, to turn it into an "alchemical magnet."
Hal gets a protective suit made from Wonder Woman's invisible plane, but it isn't enough by itself, and Hal has to protect himself with the remaining energy in his Power Ring, a mere point 0 3 percent.
He's trying to siphon the energy reciting the oath, but it's not working very well, his Ring's charge still dropping.
Then, he does this.