Wings erupted from Eren's back, as he flew towards Yevni. He reached for her, fingers outstretched, but just as he was about to catch her, she dissolved into a cloud of black mist.
The mist surged outwards, morphing into a swarm of bats that darted through the suffocating aura of death.
They swooped downwards, evading Eren's grasp entirely. Only when they neared the ground did the bats gathered again, reforming into the shape of the girl.
Eren landed behind her, a flicker of surprise in his eyes. He was slightly impressed by her abilities. It wasn't just a good flying skill, but also a decent escape skill if utilized well.
He was slightly glad that she hadn't been able to use it when she first attacked him. Her heart was grabbed by him right away. If she had been able to use this ability before that, it would've been much harder to catch her.