Cavern of Souls (0269) [The Lost Caverns of Ixalan] playmat instead you may put a

instead you may put a creature or land card from your hand onto the battlefield tapped

Destroy target nonland permanent with converted mana cost 3 or less

its controller adds an additional G

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

but the internal mechanisms didn't leave room for the frog

Cavern of Souls (0269) [The Lost Caverns of Ixalan] playmat instead you may put aSet: 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.