Suggested by Sonic Amon has some good hand to hand skills and bloodbending abilities, but neither one of those options will be particularly effective against Phantomon. It’s a rough matchup for him because of this. Phantomon hovers at a good distance. He may not be particularly fast but his attacks are absolutely devastating which will deal a great deal of damage to Amon. Amon won’t really be able to dodge forever and Phantomon only needs to eventually land a few good hits. Phantomon wins.