Anemoi: Model Elephant
Eren summoned another creature in front of him to take the brunt of the attacks Gian had launched. The wind-element elephant wasn't an ideal choice as a summoned creature inside the fire domain. It was, however, Eren's most effective defense against Gian's approaching attacks.
The elephant used his trunk to fire a bunch of compressed wind balls at the spheres. They were shot with such force that they managed to deflect most of the spear attacks. The remaining attacks landed on the summoned creature's body. Eren used the elephant as a shield to get away from the immediate danger.
Swoosh. Zoom. Boom.
Eren attacked the Aqua Whips using his dual-element weapons. He sent a series of Blitz Waves and Igni Waves at the Aqua Whips and combined them into singular attacks midway using elemental fusion. This way, he avoided putting pressure on the axes and enhanced the spells' effectiveness at the same time.