A green, verdant looking spear made of very tough bark, the tip of the javelin is made from a magical stone imbued with potent druidic magic. It is mostly used by rangers and druids affiliated with Treantborn, and its cruel powers are utilized to punish the wicked trespassers and those who would harm the nature.
You have a +1 bonus to attack and damage rolls with this weapon.

Druidic Warrior: While you are attuned to this weapon, you know the Druidcraft and Thorn Whip cantrips. Additionally, you know one cantrip from the following list: Gust, Mold Earth, Produce Flame, and Shape Water.
Wisdom is your spellcasting ability for these spells. You can choose a different cantrip upon finishing a long rest, you can replace Thorn Whip with another one of the cantrips from the list.

Thorns and Vines: Before throwing or making an attack with this javelin, you can choose to activate its dormant powers. Immediately after the javelin hits its target or lands on the ground, it casts the Bramble Overgrowth spell(without requiring concentration, but it lasts only up to1 minute) at its base level(DC 16), targeting the closest creatures while ignoring the creature attuned to it. If the javelin hit a creature, it immediately fails on the initial saving throw.
Afterwards, at the start of each of your turns, the javelin targets an additional number of unaffected creatures or objects that are closest to it to affect as per the spell description. The javelin always ignores the creature attuned to it. As a bonus action, you can command the spear to end the spell.
You can use this ability a number of times equal to half your proficiency bonus(rounded down, minimum of 1), and you regain all uses after finishing a long rest. You can't use this ability again until the previous usage ends.

Proficiency with a Javelin allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Thrown, Slow