Ancient Gold Dragon

A shimmering Golden Dragon's head emerges from the ground and ensnares one enemy of your choice. The target must succeed a Dexterity saving throw against your Spell Save DC or be Restrained. At the beginning of the target's turn, it takes 1d6 piercing damage, and can make a Dexterity saving throw to become unrestrained. On a failed Dexterity saving throw, the target remains restrained.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the extra damage increases by 1d6 for each slot level above 2nd.