A lot of the Gouki Monsters can be protected from other card effects, while maintaining a very high Attack
She can reduce the cost of one of the opponent's Characters by -4 and then KO it, an easy answer for pesky Characters and if you need to remove higher-cost Characters, you can back her up with a cost-reduction effect
Second, I'll use this moment as a reminder that Core (Bracket 2) is on the level of an average, modern-day preconstructed Commander deck, but that doesn't mean there can't be some variance there
You can only activate this effect of F.A
Treasure Cup Queen (US$1,800) First released as part of the Animal Kingdom Pirates [ST-04] starter deck, this Queen card was already a significant part of the metagame even before this alternate art version was awarded as a tournament prize
But hey, it can also transform into Shiva