Magic Resistance. The altisaur has advantage on saving throws against spells and other magical effects.
Multiattack. The altisaur makes one Stomp attack and one Tail attack. The altisaur can't make both attacks against the same target.
Stomp. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit:33 (7d6 + 9) bludgeoning damage. If the target is a Huge or smaller creature, it must succeed on a DC 22 Strength saving throw or have the prone condition.
Tail. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit:45 (8d8 + 9) bludgeoning damage, and the target is pushed up to 20 feet horizontally from the altisaur.
When Annam's children first began to populate the worlds of the Material Plane, the All-Father created behemoth dinosaurs to live alongside them as companions. The primeval magic used to create the dinosaurs still thrums through their being and manifests in colorful, scar-like lines on their towering bodies. Some of these ancient dinosaurs persist in timeless jungles, hidden enclaves, and other lands untouched by the rest of the world.