Hey, it'd be great if you could add this mod. I saw it has been requested once before, but it didn't have enough downloads yet. I just saw that it has reached 1000 downloads not long ago, so I hope it'll be added this time.
Ender Skills: https://www.curseforge.com/minecraft/mc-mods/ender-skills
Adds some amazing elemental abilities categorized by offense, mobility, and defense, as well as altars where said abilities can be aquired, boosted, and leveled. The abilities are all well-done, the effects are very nice, and the mod is generally balanced. It can be used for both PvE and PvP. The altars can be leveled up to get stronger abilities and more boosts, in order to become the strongest mage.