Theylens' Expanded Synapses

After spending the casting time tracing magical pathways and building new synaptic pathways within the atomized cloud of residuum glass, you touch the pearl to the forehead, or comparable location should it be without of a Huge or smaller beast or plant. The target must have either no Intelligence score or an Intelligence of 3 or less. The pearl painlessly embeds itself there as it acts as the bridge between the organic and natural mind and the new arcane created intelligence. The target gains an Intelligence of 10. The target also gains the ability to speak one language you know. If the target is a plant, it gains the ability to move its limbs, roots, vines, creepers, and so forth, and it gains senses similar to a human's. Your GM chooses statistics appropriate for the awakened plant, such as the statistics for the awakened shrub or the awakened tree. The creature also gains 2 character levels of the caster's choosing, provided the creature has the necessary stats for the class as determined by said class's multiclassing minimums found in chapter 6 of the player's handbook

The awakened beast or plant is charmed by you for 30 days or until you or your companions do anything harmful to it. When the charmed condition ends, the awakened creature chooses whether to remain friendly to you, based on how you treated it while it was charmed.

caution, the residuum is lost at the start of casting the spell, and if the spell is interupted mid casting it will be lost, thought the pearl isn't consumed until the final moments of the spell