Argentinosaurus (5e Creature)
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Gargantuan beast (sauropod), unaligned
Saving Throws Str +17, Con +17, Wis +13
Legendary Resistance (1/Day). If the argentinosaurus fails a saving throw, it can choose to succeed instead.
Thick Skin. If an attack deals less than 40 damage to the argentinosaurus the damage is reduced to 5 (before resistances).
Multiattack. The argentinosaurus makes two attacks: one with its stomp and one with its tail.
Stomp. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 152 (26d10 + 9) bludgeoning damage. If target is a creature, it must succeed on a DC 23 Strength saving throw or be knocked prone. If the creature is already prone any hit with this attack counts as a critical hit.
Tail. Melee Weapon Attack: +17 to hit, reach 40 ft., one target. Hit: 75 (12d10 + 9) bludgeoning damage, and each creature within 60 feet of the argentinosaurus must succeed on a DC 23 Constitution saving throw or take 24 (4d10) thunder damage and be deafened for 1 minute. An affected creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Argentinosaurus is one of the largest sauropods to ever exist, measuring around 110ft(40m)long. Argentinosaurus, like its Titanosaurus cousin, is mostly untouchable as an adult. Even Giganotosaurus will not touch it unless it is in a frenzy. The Argentinosaurus is passive to almost all creatures that approach it, but it has been recorded to have an innate distrust of Tieflings, Goliaths, and Elephantines. No one can figure out why, but this is common amongst all Argentinosaurus.