Mission Briefing [Guilds of Ravnica Prerelease Promos] Onslaught Whenever an opponent casts a

Whenever an opponent casts a spell

while they had mere minutes

create four 1/1 green Squirrel creature tokens

Set: Kaladesh Prerelease Promos Type: Land Rarity: Rare Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands

"I can't hear them scream

Mission Briefing [Guilds of Ravnica Prerelease Promos] Onslaught Whenever an opponent casts aSet: Guilds of Ravnica Prerelease Promos Type: Instant Rarity: Rare Cost: {U}{U} Surveil 2, then choose an instant or sorcery card in your graveyard. You may cast it this turn. If that spell would be put into your graveyard, exile it instead. (To 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.)