Arboreal Breath of Life

You breath life into a tree of huge size. For the duration this tree becomes a Treant. It will follow your commands but you have no magical control over it. If you or one of your allies performs an action that would antagonize the Treant (E.g. attack it, harm the forest, etc.) it may become hostile towards you at the DMs discretion. You cannot manually stop the effect of this spell. It only ends after the duration has expired or if the Treant is reduced to 0 hit points. Whenever the spell ends and the Treant is still sufficiently intact it will root itself in the ground wherever it stands and return to a normal tree.

You control the Treant and it takes its turns directly after yours. If at any point the Treant becomes hostile towards you the DM may take over control of its actions.