Ancient Gold Dragon

Ancient Gold Dragon
CR 24Gargantuan Dragon (metallic), Lawful Good
Reveal Stat Block
Armor Class
22Hit Points
546 (28d20 + 252)Speed
40 ft., fly 80 ft., swim 40 ft.str
30
+10
dex
14
+2
con
29
+9
int
18
+4
wis
17
+3
cha
28
+9
Traits
Amphibious.The dragon can breathe air and water.
Legendary Resistance (4/Day, or 5/Day in Lair).If the dragon fails a saving throw, it can choose to succeed instead.
Actions
Multiattack.The dragon makes three Rend attacks. It can replace one attack with a use of (A) Spellcasting to cast Guiding Bolt|XPHB (level 4 version) or (B) Weakening Breath.
Rend.m 17 to hit, reach 15 ft. ({@damage 2d8 + 10) Slashing damage plus 9 (2d8) Fire damage.
Fire Breath 5.dex 24, each creature in a 90-foot Cone [Area of Effect]|XPHB|Cone. 71 ( Half damage.
Weakening Breath.str 24, each creature that isn't currently affected by this breath in a 90-foot Cone [Area of Effect]|XPHB|Cone. The target has {@variantrule Disadvantage|XPHB on Strength-based D20 Test|XPHB|D20 Tests and subtracts 5 (1d10) from its damage rolls. It repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.
Legendary Actions.The creature can take 3 legendary actions...
Banish.cha 24, one creature the dragon can see within 120 feet. 24 ( The dragon can't take this action again until the start of its next turn.
Guiding Light.The dragon uses Spellcasting to cast Guiding Bolt|XPHB (level 4 version).
Pounce.The dragon moves up to half its Speed|XPHB, and it makes one Rend attack.