Astema, the Returnee of Hatred (ABC-RD-010 SR) [Arcana Battle Colosseum]

[Flying] [Enter] -> Your opponent loses 500 life. If there are three or more runes revealed from your rune area, you gain 500 life. Pay 400 life: Draw a card. Play this ability only during your turn and only once per turn. Pay 1000 life: Your opponent loses 500 life. Play this ability only during your turn and only once per turn.