Any Creature infected/cursed with Zuggtmoy's Gift has disadvantage on attack rolls against plant creatures.  In addition, whenever an infected creature finishes a short or long rest, it must make a DC 15 Wisdom saving throw.  On a failed save, the creature lapses into a state of euphoric bliss.  While in this state, the creature can't take actions, bonus actions, or reactions, and must use all it's movement to dance and twirl about.  At the end of it's turn, the creature can repeat the saving throw, ending the euphoric bliss effect on a success.

While infected with Zuggtmoy's Gift, the creature gains the ability to cast a special version of the tree stride spell once per day without components. This spell allows the infected creature to move through patches of mold or fungi instead of trees.  Once it casts this spell, the infected creature can't cast the spell until it finishes a long rest.

Notes: Incapacitated, A Remove Curse or Greater Restoration spell rids the creature of Zuggtmoy's Gift, Curse, Movement, Exploration, Deception, Cursed