The wizard only ever helped when his goals temporarily aligned with others. Var wanted to see some Hellwarrior-related prophecy fulfilled—helped along by Janel overthrowing Duke Xun, by killing Morios. The population would interpret her victory over the dragon as proof of her right to rule them. Which put her one step closer to smashing the empire. And that was what Relos Var wanted. As always, he played the long game.