AwenTree

False Appearance. While the tree remains motionless, it is indistinguishable from a normal tree.

Fealty. The tree is imprinted with the life signature of the creature who plants it’s acorn and will always obey the commands of that creature before taking any other actions. 

Slam. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) bludgeoning damage. If the master of the tree is level 5 or higher, the tree makes an additional melee attack for every three levels above level 5, i.e. 2 attacks at level 8, three attacks at level 11, etc.

Guardian of the Forest. The master of the tree can command it to attack at will against any creature that approaches within its reach. The master can specify races or alignments, for example only Evil creatures, or only Orcs, or even a specific creature. Native creatures such as birds and forest animals are excluded unless an individual animal is specified (such as an evil enemy’s Hawk familiar).