Tailrock

Tailrock is a game where dragons hit a rock to each other with their tails. It was invented by a Nightwing/Sandwing hybrid named Pyrus, who also wrote scrolls about insects in Pyrrhia. Pyrus got the idea from scavengers who were throwing spheres at each other.

Tailrocks are sold at stalls - and it is encouraged to collect them. Dragons show off their rare Tailrocks, which are stones. Basic stones off the floor can be used, or painted rocks can be purchased. Sometimes rocks embedded with words, jewels or precious metals are used. Dragons using gemstones, such as diamonds as a Tailrock is not unheard of.

Trivia

 * It seems to be similar to tennis/volleyball.