Ancient White Dragon

Ancient White Dragon
CR 20Gargantuan Dragon (chromatic), Chaotic Evil
Reveal Stat Block
Armor Class
20Hit Points
333 (18d20 + 144)Speed
40 ft., fly 80 ft., swim 40 ft., burrow 40 ft.str
26
+8
dex
10
+0
con
26
+8
int
10
+0
wis
13
+1
cha
18
+4
Traits
Ice Walk.The dragon can move across and climb icy surfaces without needing to make an ability check. Additionally, Difficult Terrain|XPHB composed of ice or snow doesn't cost it extra movement.
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.
Rend.m 14, reach 15 ft. ({@damage 2d8 + 8) Slashing damage plus 7 (2d6) Cold damage.
Cold Breath 5.con 22, each creature in a 90-foot Cone [Area of Effect]|XPHB|Cone. 63 ( Half damage.
Legendary Actions.The creature can take 3 legendary actions...
Freezing Burst.con 20, each creature in a 30-foot-radius Sphere [Area of Effect]|XPHB|Sphere centered on a point the dragon can see within 120 feet. 14 ( The dragon can't take this action again until the start of its next turn.
Pounce.The dragon moves up to half its Speed|XPHB, and it makes one Rend attack.