The four reapers who surrounded Gaya had their gazes locked on Gaya. They were all wearing wolf masks hence Victoria and Edith couldn't see how they looked behind the mask. The repairs weren't sure whether the girl in front of them or the two near the bushes were their targets. However, just to be sure, they decided to kill all of them.
"Energy Whip" one of the reapers quickly cast a spell as sparkling blue energy whip materialized in his hands. The whip produced a crackling sound of electricity.
"Shield of Shadows" another reaper cast a spell that formed a thin layer of dark smoke around all of the four reapers. It was obvious this was a defense spell but Gaya couldn't care less. She was at the Core Strengthening stage and these reapers were just at Core Formation level 4 or 5 according to Sarba.
"Lightning arms" the third one cast a spell as the reaper's hands illuminated blue because of the lightning bolts coiling his arms.