Svirfneblin Camouflage (4/day). The gnome has advantage on Dexterity (Stealth) checks made to hide.

Gnome Cunning. The gnome has advantage on Intelligence, Wisdom, and Charisma saving throws against magic.

Innate Spellcasting. The gnome’s innate spellcasting ability is Wisdom (spell save DC 17). It can innately cast the following spells, requiring no material components:

1/day each: disguise self, nondetection

Fungal Body. Critical hits against you count as normal hits instead, unless you are incapacitated. 

Wild Shape (2/Rest). Zumgi can use her action to transform into a creature with a Max CR of 1 and can remain in that form for up to 9 hours. The Druid can choose whether its equipment falls to the ground, melds with its new form, or is worn by the new form. The Druid reverts to its true form if it dies or falls unconscious. The Druid can revert to its true form using a bonus action.

While in a new form, the druid’s stat block is replaced by the stat block of that form, except the druid keeps its current hit points, its hit point maximum, this bonus action, its languages and ability to speak, and its Spellcasting action.

Symbiotic Entity. As an action, instead of using Wild Shape to transform into a beast, you can activate the spores around you and gain 72 temporary hit points and the following additional benefits:

• Using Halo of Spores during this time means you can role an additional die and add its damage to the total.
• Melee weapon attacks deal additional 1d6 necrotic damage to any target they hit. 

These benefits last for 10 minutes or until, you lose all the temporary hit points, or you use Wild Shape again.  

Multiattack. The druid makes three Staff of the Woodlands or Bone Chilling attacks. It can replace one attack with a use of Spellcasting.

Staff of the Woodlands. Melee Weapon Attack: +6 to hit (+7 to hit with shillelagh), reach 5 ft., one target. Hit: 5 (1d6+2) bludgeoning damage, 6 (1d8+2) bludgeoning damage if wielded with two hands, or 8 (1d8 + 4) bludgeoning damage with shillelagh.

Bone Chilling. Ranged Spell Attack: +11 to hit, range 120 ft., one target. Hit: 26 (6d6 + 5) necrotic damage, and the target is cannot regain hit points until the start of the druid’s next turn. If the target is undead, it also has disadvantage on all attack rolls until the end of the Druid’s next turn. 

Spellcasting. The druid is a 18th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 17, +11 to hit with spell attacks). It has the following druid spells prepared:

At will: beast sense, entangle, speak with animals, produce flame, druidcraft, shillelagh

3/day each: animal messenger, dominate beast, faerie fire, tree stride(can use fungal walls instead), blindness/deafness, blight, cloudkill, contagion, gentle repose, animate dead, confusion, gaseous form

1/day each: commune with nature (as an action), mass cure wounds, druid grove

Halo of Spores. When a creature you can see moves into a space within 10 feet of you, or starts it’s turn there, you can use your reaction to force the creature to make a Constitution saving throw against your spell DC. On a failure, the target takes 6 (1d10) necrotic damage.