pokemon tapu koko gx card Koko-GX (Secret Rare) An individual card from the Pokémon trading and collectible card game (TCG/CCG) CSM2.1C-050 Tapu Koko GX |

It used to be that if you cast a cascade card, such as Shardless Agent, that you could then cast either side of a card like this

The English translators of the original Pokmon games had a daunting task

Aerith, Last Ancient offers a lifegain payoff you will almost never pull off in an actual game because aside from Sephiroth, Fallen Hero or Wrecking Ball Arm there's no other way to reliably get her to 7 power and very little lifegain in the deck otherwise

Different grader = different opinion

Assuming you're rolling into your eighth turn after you cast this, her +2 ability is going to give you eleven total mana to work with