Crush of Tentacles (Prerelease) [Oath of the Gatewatch Prerelease Promos] Shapeshifter create three 1/1 colorless Eldrazi

create three 1/1 colorless Eldrazi Scion creature tokens

create a 5/5 red Dragon creature token with flying

They don't untap during their controller's next untap step

you may cast that card and you may spend mana as though it were mana of any color to cast that spell

When Sylvan Messenger enters the battlefield

Crush of Tentacles (Prerelease) [Oath of the Gatewatch Prerelease Promos] Shapeshifter create three 1/1 colorless EldraziSet: Oath of the Gatewatch Prerelease Promos Type: Sorcery Rarity: Mythic Cost: {4}{U}{U} Surge {3}{U}{U} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) Return all nonland permanents to their owners' hands. If this spell's surge cost was paid, create an 8 8 blue Octopus creature token.