Before Najeela was revealed I was debating between brewing a Warrior Tribal deck under Saskia the Unyielding, or going for a +1/+1 Counter subtheme with Daghatar the Adamant, or a partner brew with Reyhan, Last of the Abzan
Just make sure you understand the difference between color and color identityso dont expect your Go-Shintai or Morophon to survive
Its best features are its attacks, namely Crimson Storm , which dealt, at the time, 300 damage and was very strong, as it knocked out anything in this format, and its GX attack, Raging Out
You will fare far better with four of these each in your deck
The original base set Charizard holo is still considered the holy grail of Pokemon cards, but will nowadays sell for considerably less than some of the current rares from Sword & Shield