Sorcerer's Vine (5e Hazard)
From D&D Wiki
The sorcerer's vine is a parasitic growth that appears in magical forests or where powerful magical creatures reside in. It grows on the bark of any tree towards the canopy and sends vines down to the ground to spread to the next tree. It is commonly dark blue but turns into a glowing light blue light at night which is visible up to 100 feet.
Any spell cast within 60 feet of this vine will cause wild magic to change the spell, the caster has to roll once on the wild magic table if he casts a spell of level 1 or higher.
Magic items also have a 50% chance to stop working.