In our current Standard format, both Mew VMAX [Fusion Strike] and Gardevoir ex [Scarlet and Violet] are Psychic-type Pokmon with a Weakness against Darkness-type Pokmon, so Charizard ex instantly has an edge in the competition
You only need to exile four cards to drop the cost down to just one black mana, which is pretty easy to get to with a healthy mix of cantrips and fetch lands
Let me know if you disagree with my very loose ranking in the comments
Kiki-Jiki, Mirror Breaker Kiki-Jiki Mirror Breaker taps to copy a nonlegendary creature, which is a standard combo piece in multiple formats
non creatures i would run: Lifecrafter's Bestiary, Skullclamp, Return of the Wildspeaker, Inspiring Call, Harmonize, Rishkar's Expertise maybe a few things like Fade from History, Beast Within, Nature's Claim, Collector Ouphe is also really strong since you will be running creatures Sure, the mana doubling can be fun, but is it really needed