Cavern of Souls (0269) [The Lost Caverns of Ixalan] playmat its controller adds an additional

its controller adds an additional G

Set: Collectors' Edition Type: Creature — Hydra Rarity: Rare Cost: {X}{R}{R} Rock Hydra enters the battlefield with X +1/+1 counters on it

Set: Foreign Black Border Type: Land — Plains Island Rarity: Rare ({T}: Add {W} or {U}

Whenever one or more +1/+1 counters are put on a creature you control

Cavern of Souls (0269) [The Lost Caverns of Ixalan] playmat its controller adds an additionalSet: The Lost Caverns of Ixalan 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.