Cavern of Souls [Modern Masters 2017] Unhinged your opponent cannot activate cards

your opponent cannot activate cards or effects until the end of the Damage Step

Set: Commander 2014 Sealed Release Date: 2014-11-07 Take Command

A grave is the safest place to store ill-gotten treasures

This card can only be Special Summoned by Tributing "Sanga of the Thunder"

Each Draft Booster contains two non-foil double-faced cards

Cavern of Souls [Modern Masters 2017] Unhinged your opponent cannot activate cardsSet: Modern Masters 2017 Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.