I think Attempt Number Three is too efficient by itself and would most commonly be run without other phoenixes it can support, just because the escape cost is far too easy and cheap. It'd be one of the strongest creatures ever printed on its own merit and fail to incentivize a tribal build.
Protection from Red
Whenever a Phoenix you control dies, create a 0/1 red Egg creature token. T, Sacrifice an Egg: Charhand does 2 damage to any target. Return up to one Phoenix from your graveyard to your hand.
Really thought about using the Orcish Cannoneers 3 damage to self when firing eggs. Maybe I'd remove the tap cost if so, but it might be too easy and manaless to just burn someone down if you have a superior life total.
For your card, I'd remove the defender and upkeep restriction (lots of phoenixes have haste so the restriction is kind of pointless)
I don't know if I feel this card on a flavor level. What about this phoenix compels other phoenixes to do more stuff? I think it would make more sense if it was a Human Wizard, or Bird Shaman, or Egg(!Legendary Egg!) that cared about phoenixes or something. Also, the jump from "bad" to "Solid" or "decent" is kind of unfair, there's at least "meh" somewhere in between those two. Bad and Unplayable are the same thing.
I would say the card is at least average, but not because I want to play it along with a bunch of phoenixes. Hasty evasive threats that loot on etb are just gonna work. The looting has some positive interactions with the tribal, but a lot of phoenixes are expensive to return (Shard Phoenix, Worldheart Phoenix) or you have to invest in other methods to revive them (Arclight Phoenix, Warcry Phoenix)
If it were a phoenix that made Elemental Egg tokens that had "Sacrifice this Egg: Return target nonlegendary Phoenix from your graveyard to play" every turn, or whenever you cast an instant or sorcery, that'd be pretty baller. Something that brought the phoenixes together and ironed out the inconsistencies of the tribal.