Dragoterran Communion

You evoke the power of consumed dragons to change the very earth beneath you, . The ground becomes engulfed in a rosy pink mist, and can become more tenacious by taking on Dragonrot to further sink into the draconic nature of this spell. The various forms you can take are as follows.

Terraclaw. Jamming your arm into the earth, the right claw of a dragon rises up out of the earth, targeting a creature or space within 60 feet of the caster. You make a melee spell attack against a targeted creature to deal 5d8 bludgeoning damage. Creatures within a 30-foot radius Sphere in that space (including the creature targeted by the attack) must make a Dexterity saving throw or take 5d8 bludgeoning damage and be grappled until the start of your next turn. As a bonus action after using this form, the caster can receive 2 Dragonrot Charges to have the claw throw all creatures in that 30-foot sphere into the ground. Creatures thrown must make a Constitution saving throw, taking 3d8 bludgeoning damage and are instead stunned until the start of your next turn on a failed save, or take no damage and are pushed away 5 feet on a successful one.

Terraleg. Stomping the ground, the hind leg of a dragon emerges from the ground, targeting a space within 30 feet of the caster. Each creature within a 15-foot radius sphere in that space must make a Dexterity saving throw or take 2d8 bludgeoning damage and be sent 1d6x10 feet into the air. As a bonus action before using this form, the caster can receive up to 3 Dragonrot Charges to increase the height by 1d6 and increase the damage dealt by 2d8 per Dragonrot Charge received. If 3 Dragonrot Charges are taken, all affected creatures are Incapacitated until they make a successful Constitution saving throw.

Terraspine. The ground in a 30-foot radius centered on a point within range twists and sprouts spikes and scales akin to the body of a Felldrake. For 1 minute, the area becomes difficult terrain. When a creature moves into or within the area, it takes 3d6 piercing damage for every 5 feet it travels. At any time during this spell's duration, the caster can recieve a Dragonrot Charge to force a creature to make a Dexterity saving throw. On a failed save, they take 2d8 piercing damage and are grappled as a fanged maw grabs at one of their limbs, pinning them down.