Glacial Chasm [From the Vault: Realms] SPA Ordenes del Patriarca you may play that card

you may play that card

Set: Eldritch Moon Type: Creature — Eldrazi Insect Common Cost: {8} Emerge {6}{G} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's converted mana cost

So sayeth the bey

Set: Gatecrash Type: Creature — Thrull Common Cost: {W} {B}: Regenerate Dutiful Thrull

When Arena of the Ancients enters the battlefield

Glacial Chasm [From the Vault: Realms] SPA Ordenes del Patriarca you may play that cardSet: From the Vault: Realms Type: Land Mythic Cost: Cumulative upkeepPay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) When Glacial Chasm enters the battlefield, sacrifice a land. Creatures you control can't attack. Prevent all damage that would be dealt to you.