Doom Whisperer [Guilds of Ravnica Promos] Modern Event Deck 2014 take an extra turn after

take an extra turn after this one

Return them to the battlefield at the beginning of your upkeep on your turn X in the next game you play with one of your opponents in this game

Which tells us the way to go

{4}: Untap Grim Monolith

Doom Whisperer [Guilds of Ravnica Promos] Modern Event Deck 2014 take an extra turn afterSet: Guilds of Ravnica Promos Type: Creature Nightmare Demon Rarity: Mythic Cost: {3}{B}{B} Flying, trample Pay 2 life: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) The sound of every twisted secret tempts you to hear another.