Bruno is a 5th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 13, +5 to hit with spell attacks). Bruno has the following druid spells prepared:
Cantrips (at will): druidcraft, produce flame, thorn whip   1st level (4 slots): entangle, fog cloud   2nd level (3 slots): heat metal, spike growth   3rd level (2 slots): conjure animals (he summons 2 CR1 Monstrosities), plant growth

Keen Sight and Smell. The owlbear has advantage on Wisdom (Perception) checks that rely on sight or smell.