Demon of Dark Schemes [Kaladesh Prerelease Promos] Return to Ravnica Athreos isn't a creature

Athreos isn't a creature

Set: Core Set 2019 Prerelease Promos Type: Creature — Hydra Rarity: Rare Cost: {X}{G} Hungering Hydra enters the battlefield with X +1/+1 counters on it

and nor can I

{T}: Add {R} or {G}

Splice onto Arcane {2}{R}{R} (As you cast an Arcane spell

Demon of Dark Schemes [Kaladesh Prerelease Promos] Return to Ravnica Athreos isn't a creatureSet: Kaladesh Prerelease Promos Type: Creature Demon Rarity: Mythic Cost: {3}{B}{B}{B} Flying When Demon of Dark Schemes enters the battlefield, all other creatures get 2 2 until end of turn. Whenever another creature dies, you get {E} (an energy counter). {2}{B}, Pay {E}{E}{E}{E}: Put target creature card from a graveyard onto the battlefield under your control tapped.