Keystone Awakening: When the relic in the temple archway is touched, the Temple Guardian T-Rex awakens. It gains advantage on initiative rolls and cannot be surprised.

Innate Spellcasting: The Temple Guardian T-Rex can cast the Entangle spell (save DC 14) at will without needing material components. Its spellcasting ability is Wisdom.

Bite: Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 33 (4d10 + 6) piercing damage.

Slashing Claw: Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 20 (3d8 + 6) slashing damage.

Tail Swipe (Recharge 5-6): The Adolescent Temple Guardian T-Rex makes a tail attack against each creature within 10 feet of it. Melee Weapon Attack: +9 to hit, reach 10 ft., each target. Hit: 25 (3d10 + 6) bludgeoning damage, and the target must succeed on a DC 15 Strength saving throw or be knocked prone.