Pic related is Bennu. It's an Egyptian goddess which many believe it was the Greek inspiration for the Phoenix. It's like the "soul" of Ra and inspire the act of creation in Egyptian mythology, they believed she renewed herself periodically like the sun. It's a symbol of rebirth.
So I had an idea:
*TBD* (Name in progress), tiny grey heron pokémon
>Flying type
>Early Bird / Big Pecks
>HA: Fragile Legs (when HP is below 50%, def gets halved but speed doubled)
>Stats: 50/100/50/100/50/100 (BST: 450)
>Evolves at level 50, heron gets bigger and more detail but it's still grey
>Stats: 60/120/60/120/60/110 (BST: 530)
>Level up with item "burning feather" (FEMALE ONLY), big red heron full of red plumage with noble/deity look
>Flying/Fire
>Ability: Regenerator (in any case, even if it has the hidden ability prior to evolving)
>Stats: 130/60/120/60/120/60 (BST: 550)
And it's version exclusive in an hypotetic new generation. It's counterpart is:
*TBS*, tiny green elephant pokémon, has a single flower on his back
>Grass type
>Rattled / Grass Pelt
>HA: Magic Flower (Gives priority to Grass moves)
>Stats: 100/50/100/50/100/50 (BST: 450)
>Evolves at level 50, bigger elephant with more flowers
>Stats: 110/60/120/60/120/60 (BST: 530)
>Level up with item "sutra" (MALE ONLY), becomes a ganesha-like pokémon, still green and full of flowers though
>Grass/Psychic
>Ability: Wonder Guard (in any case, even if it has the hidden ability prior to evolving)
>Stats: 60/120/60/120/60/130 (BST: 550)