Firbolg Treesinger

Spellcasting. The treesinger alone is a 1st-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 12, +4 to hit with spell attacks). It has the following druid spells prepared:

Cantrips (at will): druidcraft, produce flame, shillelagh

1st level (1 per day each): entangle, longstrider, speak with animals, thunderwave, create or destroy water

Treesinger Chorus. Multiple treesingers can amplify their magical power by singing together. A group of treesingers who all use their action to cast a spell function as a higher-level spellcaster, with a spellcasting level equal to the number of singers in the group. Spells cast in this way ignore the somatic and material costs, and if they apply an effect to the caster, all participating treesingers gain the effect. The following spells become available according to the size of the group:

2 or more singers:  2nd level (1 per day each): animal messenger, barkskin, healing spirit, warding wind

4 or more singers: 3rd level (1 per day each): erupting earth, plant growth, sleet storm

7 or more singers: 4th level (1 per day each): freedom of movement, guardian of nature

11 or more singers: 5th level (1 per day): wrath of nature

The treesinger can attack with their quarterstaff once, or cast a spell.

Quarterstaff. Melee Weapon Attack: +2 to hit (+4 to hit with shillelagh), reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage, 4 (1d8) bludgeoning damage if wielded with two hands, or 6 (1d8 + 2) bludgeoning damage with shillelagh.