Blacephalon (SM221) [Sun & Moon: Black Star Promos] Phyrexian Horror Set: The Brothers' War Commander

Set: The Brothers' War Commander Type: Creature — Elf Druid Rarity: Mythic Cost: {3}{G} Lands you control and land cards in your library are basic

then you may return a creature card with mana value 2 or less from your graveyard to the battlefield

cards in your cost area) : Set up to 1 of your "Supernova" or "Straw Hat Crew" type Character cards with a cost of 5 or less as active

this Character gains [Double Attack] during this turn

But according to my calculations

Blacephalon (SM221) [Sun & Moon: Black Star Promos] Phyrexian Horror Set: The Brothers' War CommanderSet: Sun & Moon: Black Star Promos Type: Psychic Rarity: Black Star Promo Retreat cost: Colorless,Colorless