Alan VS Starheart, the source of his power, composed of all wild magic of the universe. The fact that he can hurt Starheart is alone incredibly impressive.
Another teleport feat.
Starheart protects him even from the time-altering powers of Extant.
Alan helps nullify lunar gravity. Even if he does only something like 1/15 of the power, considering the mass of moon, it is pretty impressive.
Creates gravedigger constructs to fight some zombies:
Alan's lantern is destroyed (by Grundy), leaving him completely powerless
Despite being powerless, Alan not only wills a new lantern into existence, but he also draws back all of the energy his old lantern housed (even though said energy had already found new 'vessels' to inhabit):