Elder Gem Dragon
An elder gem is gargantuan and so heavy with stone that it moves like a landslide. It holds a mountain peak, raises stone walls with Earth-Rifting and fights from behind them. Its hoard is its own shed scale, heaped in chambers under the peak.
- Physiology
- Draconian
- Size
- Gargantuan
- Speed
- 40 ft., fly 80 ft., burrow 20 ft.
- Armor class
- 23 (ancient scale)
- Hit points
- 331 (17d20 + 153)
- Proficiency
- +6
- STR 29 +9 save +9
- DEX 8 -1 save +5
- CON 29 +9 save +15
- INT 18 +4 save +4
- WIS 16 +3 save +9
- CHA 23 +6 save +12
- Skills
- Perception +9 , Stealth +5 , Athletics +15
- Passive Perception
- 19
- Senses
- blindsight 60 ft., darkvision 120 ft.
- Languages
- Common, Draconic, Dwarvish
- Damage resistances
- force
- Found in
- Subterranean
Spells
Channels with WIS. Save DC 17, spell attack +9 .
Raises stone with Earth-Rifting, and fights from behind the walls it makes.
- At will Pebble , Bulwark , Berm
- 3/day each Rampart , Boulder , Bastion
- 1/day each Avalanche , Upheaval
Traits
-
Frightful Presence
Each hostile creature within 60 feet that can see the dragon makes a Wisdom saving throw against its save DC or is Frightened for 1 minute.
-
Legendary Resistance
Three times per day, when it fails a saving throw, it may choose to succeed instead.
-
Gemstone Hide
A critical hit against it counts as a normal hit.
Actions
-
Multiattack
The dragon uses Frightful Presence, then makes one Bite attack, two Claw attacks and one Tail attack.
-
Bite
+15 to hit · reach 15 ft.
2d12 + 9 piercing damage
A bite from the dragon's jaws.
-
Claw
+15 to hit · reach 10 ft.
2d8 + 9 slashing damage
A claw strike from the dragon's forelimb.
-
Tail
+15 to hit · reach 20 ft.
2d10 + 9 bludgeoning damage
A strike from the dragon's tail.
-
Shard Breath
DC 23 Dexterity save
The dragon exhales in a 90-foot cone. Each creature in it makes a Dexterity saving throw, taking 23d6 piercing damage on a failure and half as much on a success. Recharges on a roll of 5 or 6 on a d6 at the start of the dragon's turn.
-
Wing Attack Legendary
DC 23 Dexterity save
The dragon beats its wings. Each creature within 15 feet makes a Dexterity saving throw, taking 2d6 + 9 bludgeoning damage and falling Prone on a failure. The dragon then flies up to half its speed.
-
Channel Legendary
The dragon casts one of its at-will spells. This costs two legendary actions.