With the enhanced senses from his bond with the cats, his void and space magic, and the fact that the void metal shuttle was his, Toz had a much easier time sensing things outside the shuttle than others. And he was the first to notice something approaching from another direction than the Blood Fiend.
It was still too far to make out in detail what it was that he had sensed, but Toz could tell it was something powerful. So, he squeezed down another couple of mana potions, pumped out a wave of space mana that shrank space, and launched the shuttle forward. The sudden charge caught Merr a little by surprise, but he wiped the sweat on his forehead with a sleeve before doing his best to aid Toz, even if it seemed futile since the Blood Fiend was still tight on their heels.