The card effect itself, while good, isn't unique
Her number actually means the "To swim" in Japanese which makes it fit well compared to some of the other numbers within Sword and Shield
All "Mekk-Knight" monsters on the field gain 300 ATK/DEF
Times have changed, enough so that this god shows up in commander pre-cons now
If an effect would Special Summon from the Deck, or add a card from the Deck to the hand, the currently acting player performs the effect using his/her own Deck, even if he/she is not the original owner of the card
This is also mandated to help players, judges, and tournament organizers to distinguish between player's decks and cards