Miniboss - Guantis The Old Bear

Okay so there's a legend of zelda forest temple thing somewhere. It's like this ancient druidic site of power, got conquered blah blah dungeon stuff. In the central hub area of this dungeon lairs Guantis the Old Bear. He guards the key to the main boss room, and probably a small hoard of loot as well. He's generally territorial, and prone to displays of intimidation, but he generally won't attack unless provoked in some way. After all, he's getting old now.

Guantis is over 500 years old and has seen more violence than he cares to recall, his final order, almost 100 years ago, was to guard the place the archdruids sealed away. He is content to be left alone, and is highly territorial, but can be bribed with food so long as no one approaches the center of his lair where the boss key is.

Age and ancient druidic power have made Guantis a very powerful enemy. His claws are imbued with druidic hatred and sunder non-magic shields and armor. The plantlife within his lair even yields to his rage, growing thorny and ensnaring his foes.

Guantis is not an enemy to take lightly.

Guantis the Old Bear 

HP: 130 / AC: 15/18 / Speed: 40 feet

Skills: Insight +5 / Perception +6 

Damage Immunities: Guantis simply ignores any non-magic damage source which deals less than 10 damage. He is also immune to druidic magic below spell level 2. 

Senses: Darkvision 60' / Keen Smell

Legendary Resistance: Once per day when Guantis fails a saving throw, he can choose to succeed instead.

Actions - 

• Multiattack - Guantis makes three attacks: one with his bite and two with his claws.
• Bite - Melee  +4 to hit / 2d10+5 Piercing
• Claw - Melee +7 to hit /2d6 + 5 Slashing damage and inflicts Shred
  
• Roar - Guantis will roar loudly if threatened. This increases his AC by 3 (accounted for in stat block) for 1 minute and the pure power of his presence causes any player who can hear him to make a DC 16 Wisdom saving throw or become frightened for 2d4+1 rounds. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature’s saving throw is successful or the effect ends for it, the creature is immune to this effect.  This is a non-magical fear effect.

Lair Actions - (DC14)  

 Grasping Vines 120 foot range / 15 foot radius - The plant life along the floor springs to life, grasping and ensnaring Guantis' enemies. Strength Save or be restrained. Full round action to break free. 

Thorny Growth 80 foot range / 10 x 10 foot cube - Nearby plants grow spines, becoming difficult terrain, and dealing 3d4 piercing damage, Con save for half to anyone who starts their turn in the thorns. 

Tremors of Power The room shakes with ancient power, all enemies within Guantis' lair must Dex save vs falling prone. 

Legendary Actions

• Get back here! Guantis may move his full speed, if moving towards an enemy who has taken the key this is treated as a disengage move.
  
• Fuck you! The beast lashes out and makes a bite attack against an enemy who has dealt damage to him this turn.
  
• Bitch Try Me The beast levels a crippling glare at you. Gaze attack 90 feet that targets one creature, DC 14 Wisdom save or become magically frightened. Can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.