Cavern of Souls (Topper) [Ultimate Masters Box Topper] Commander 2014 {U}: Morphling gains shroud until

{U}: Morphling gains shroud until end of turn

Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {1}{R} Rockslide Ambush deals damage to target creature equal to the number of Mountains you control

It's also the most likely to collapse under its own weight

We're pretty proud of that

Cavern of Souls (Topper) [Ultimate Masters Box Topper] Commander 2014 {U}: Morphling gains shroud untilSet: Ultimate Masters Box Topper 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.