Phoenix Ikki is an A-rank AoE DPS with a revive-based playstyle that aims to keep pressure on the enemy even after being taken down. He is also a premium unit, yes, the only way we can get him is buying him for 1$, yes. He is mostly a progression or collection pick rather than a top-tier PvP carry, but he can still be effective for newer accounts that need simple area damage and comeback potential.
His main damage button is Phoenix’s Wings Rise, which hits all enemies for strong C.DMG and has a chance to spike even higher damage, giving him decent wave and teamfight pressure. But sadly, it needs 4 energy points. His passive package is what makes him distinctive: Ember guarantees ember generation on death and allows up to two revives with full HP at level 5, while Searing Ashes adds immediate AoE damage each time he comes back, making him annoying to fully remove.
Overall, Phoenix Ikki is a collection unit, very hard to play for the high energy requirement. And again, we have to buy him.