Ea, Sword of Rupture

Gilgamesh calls upon his ultimate noble phantasm, Ea. Any amount of creatures within Gilgamesh's sight (This applies to creatures that are covered as well, as long as Gilgamesh knows their position.) take 5d10 damage. Each targeted creature must roll a dex save. On a failed save, each creature cannot walk towards Gilgamesh for 2 turns. If Ea is used  with the 4th spell slot, it gains this additional effect: Roll 10d10, in addition to every creature in sight of Ea not being able to attack or move towards Gilgamesh for 5 turns. However, for the rest of the battle, Gilgamesh has disadvantage to every action until the battle is over. Ea is not able to be called upon again for the entire day, unless a long rest is successfully done.