Dragon Rider

May not be valid outside the same "Monsterverse" DC series
You (a githyanki) have successfully bribed the young red dragon Cinderzard. The character may summon as an action the young red dragon three times as combat mount for 24 hours in Monsterspace; the character must also pay all the gold they earn in the adventures that they summon Cinderzard. After three uses the Story Reward is removed and the young red dragon matures into adult red dragon, ready to find its own independent lair on the material planes.