This 6 ft yew sapling has been awakened by Firbolg magic. It is still young, so most of it's intelligence is devoted to the safety and survival of itself and its charge.
This operates as a +1 druidic spell casting focus. As a bonus action the attuned creature can have the Sapling take over concentration of a druid spell with a +6 bonus to Concentration checks (even while wildshaped)

Notes: Bonus: Spell Save DC, Bonus: Spell Attacks, Requires Attunement By Druids