False Appearance. While the treant remains motionless, it is indistinguishable from a normal tree.
Siege Monster. The treant deals double damage to objects and structures.
Multiattack. The treant makes two slam attacks.
Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 16 (3d6 + 6) bludgeoning damage.
Rock. Ranged Weapon Attack: +7 to hit, range 60/180 ft., one target. Hit: 28 (4d10 + 6) bludgeoning damage.
Swipe. 15foot cone in front of it ,dc 15 dexiterty saving throw, take 22(4d8+4)
1 legendary action/per turn
charge. cursed treant charges in a straight line for 20 feet, which doesnt provoke attacks of opptunity which party member can try and do 2 things make a dc 17 dex save to dodge out of the way taking no damage on a success or make a dc 15 save to slide under nether to get to attack the core udnerneth its chest but taking half damage on a success 34 (4d10+10)
Lair and Lair Actions
Count 20 Grasping roots. roots spring up from the floor and targets within 10 feet of the target area, which the cursed oak selecets, must make a DC 15 Strength check or be restraind, a creature can use its action to break the hold dc 15 strength.