With a thought he decided to spent his origin energy
[1 origin energy spent for( summon horned rabbit)]
[ 1 origin energy spent on ( summon grass seed pouch)]
As the voice was heard again, 2 balls of light appeared infront of him. One transformed into a small pouch, the other into an egg. As both items touched the floor, a golden glow covered the room, the pouch expanded, and the grass seeds covered the room, and grew into a field of grass in an instant, whilst the egg began to crack as a horn shot out through the egg wall, followed by the rest of its fluffy little body.
Soon after this happened the rabbit began chasing after the bugs from before, due to being summoned by the core, they had a strong connection, and the rabbit new the cores thougts and joyfully carried out its purpose. Whilst this was happening a strange message appeared on the status screen
[name: nexus]
[race: dungeon core- infant]
[Realm: 1st level, 1st stage]
Experience (1.7/100)
Origin energy (0/100)
Summoned monsters
1 horned rabbit ( 0.1 origin energy gained per hour)
From this additional information it showed that just having a pet inside his core area increases his origin energy passively, this is a huge benefit for if he runs out of bugs to hunt.
2 days later, the bunny is still collecting bugs
Origin energy gained+ 24.8
Experience +2
From the first few days of hunting, it was clear he needed to expand as slowly the bugs began to avoid his area out of fear. He bought the expansion skill and used all 10 origin energy he had left to build a staircase leading upwards, away from his core room. At the end of this staircase, he accidentally bumped into a burrow of some sort, although he didn't know what was inside the burrow, he asked the horned rabbit to explore it for him.
A day later, the rabbit returned with a large injury on its side, blood stained its fur, however inside its mouth he found a small mole type creature, soon, he got a message
[origin energy increased + 60]
[ experience increased +6]