Phoenix

Tips

 * Since most of Phoenix's abilities cost health to activate, health regeneration and strength boosting items should be a top priority on phoenix. Mekansm, Pipe of Insight, and Heart of Tarrasque are good examples of such items.
 * Since the only thing that can kill the Supernova are auto-attacks from Heroes, it's best to prioritize a Shiva's guard as your first or second major purchase, as its passive attack slow works during your ultimate.
 * Since Sun Ray drains a percentage of your health, it may be better to not build health items, but instead build lots of health regeneration.
 * Buying Eul's Scepter of Divinity can sometimes be a good investment, as you can still Sun Ray while under the effects of Eul's, and you can use Eul's while Icarus diving to disable an enemy from a long distance.