Info I got.
5 hrs collection time.
Lv1 drops 4 energy, upgrade - 15 staff token, 20 Troll token, 2 spellbound block, 2 spellbound beam
Lv2 drops 5 energy, upgrade - 18 staff, 22 troll token, 4 spellbound block, 4 spellbound beam
Lv3 drops 6 energy, upgrade - 20 staff, 23 troll token, 1 earthen block, 1 earthen beam
Lv4 drops 7 energy, upgrade - 22 staff, 25 troll token, 2 earthen block, 2 earthen beam
Lv5 drops 8 energy