Call Dragon (Skyrim)

 is a Dragon Shout in.

Description
Call Dragon is a shout given to the Dragonborn near the end of the main quest (during "The Fallen" quest) in order to call the dragon Odahviing to capture him inside Dragonsreach. At the end of the main quest, Odahviing will land on The Throat of the World and engage in a dialogue, stating his loyalty to the Dragonborn. After this, by using the shout, the Dragonborn can call Odahviing to aid in battle while outdoors anywhere in Skyrim, effectively granting the ability to summon a dragon.

Odahviing will stay with the Dragonborn until all threats to them are eliminated. Odahviing is invincible, though when he has taken enough damage, he will drop to the ground, unable to fight until the battle is over, and will leave after all threats are eliminated. If the Dragonborn wanted to, he/she could always use a restorative spell to bring Odahviing's health above half to allow him to take back to the skies, if the Dragonborn has the required spell.