It encourages Gilgamesh to fight and adds excitement for the audience.
Explanation:
From this excerpt, Lord Shamash instructs Gilgamesh to attack Humbaba now that he is weakened before he enters the forest and wraps himself in his seven auras which have a paralyzing glare. He lets Gilgamesh know that Humbaba has just one aura on him and as a result, he is vulnerable and can be defeated.
The effect that Lord Shamash's intervention has on the epic is that It encourages Gilgamesh to fight and adds excitement for the audience.
