It is very useful to snag Wyvern eggs or kill rock golem,if you're putting up with wyverns just hold space on pc,the fire is so aggressive all wyverns rendered will catch on fire even fire Wyverns or Wyvern corpses.and for rock golems the Phoenixes fire burns it for considerable damage.
It's little kick attack can be used to mine any ore node effectively which is the best for metal seance it can smelt metals four at a time with no other resources, they also need sulfur to eat, can be healed with fire, and poop silica pearls.
Although it doesn't land, the Phoenix regains stamina by flying idle in the air, ridden or not. It craps silica pearls, eats sulphur, and its C gathers like an axe. Hold space for its dash, right click for the fireball, and everything but the C ignites people aflame. It can smelt and cook stuff, but sadly charcoal don't happen when you put wood in it. DISSAPOINTMENT : IMMEASURABLE