Dryad's Key (Patreon)

Wondrous item, rare

This lush, green leaf has a bug-bitten, key-like tooth at the bottom of its stem. While holding the leaf, you can use an action to speak its command word and place it into or against a Large or larger tree, turning it like a key and casting the transport via plants spell from it, using the tree as the entrance for the spell. Once the leaf has been used in this way, it withers and becomes a nonmagical leaf.

The falling leaves,
ever the herald of my absence,
as the turning of a lock would keep me from your chambers.
But when your need is greatest,
I am but a step away,
and as the leaves flourish once more,
I shall return to you.