Creature own base energy capacity. It defines what type of objects creature can craft.
When you're one with other creatures, all together you're one single creature. So that as a group you can craft objects which are normally beyond your own energy capacity. But you can stay one with other creatures only when physically close. Alone creature's energy capacity goes to it's base level.
In the beginning the energy capacity is very limited. But once you become one with other creatures, it increases. It slowly grows in the moments of here and now, when you're one with others and in the state of bliss.
Relationship of oneness with other creatures can break, when those (or you) don't give energy when friends ask. It reflects on the number of creatures you're one with and respectively on the creature's base energy capacity.
Energy capacity is visualized by the floating light particles around creature, or around all the creatures who united their energy and became one.
Increasing max capacity by giving your energy to the friend. Watch from 2:15
Increasing max capacity by giving your energy to the friend. Watch from 2:15