based on D&D 5th Edition
Ancient Silver Dragon
Gargantuan  Dragon , Lawful Good

Armor Class 19  (natural)
Hit Points 351  (18d20+162)
Speed 40 ft. , fly 80 ft. , swim 20 ft.



STR DEX CON INT WIS CHA
30  (+10) 10  (0) 29  (+9) 18  (+4) 15  (+2) 23  (+6)
Saving Throws Dex +7, Con +16, Wis +9, Cha +13
Damage Immunities Frost
Senses blindsight,darkvision, passive Perception 26
Languages Common, Draconic
Challenge 23  (0 XP)
Legendary Resistance. (3/day) automatic succeed on save after failure.
Actions
Bite. Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 21 (2d10 +10) piercing damage.
Bite+. plus 9 (2d6+2) cold damage.
Claw. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 17 (2d6+10) slashing damage.
Tail. Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 19 (2d8 +10) bludgeoning damage.
Cold Breath. (Recharge 5-6) DC 24 Constitution saving throw, half damage on successful save, for 67 (15d8) fire damage in 90 ft. Cone
Frightful Presence. DC 21 Wisdom saving throw, frightened. Save at end of each turn, successful save creature becomes immune. in 120 Area
Paralyzing Breath. (Recharge 5-6) DC 24 Constitution saving throw, on failure, creature has is paralyzed, save at end of turn in 90 Cone
Multiattack. Makes a Frightful Prescence followed by Bite and two claw attacks