Cavern of Souls (Foil Etched) - (Foil): Double Masters 2022 Acabado:Foil Whenever a +1/+1 counter is

Whenever a +1/+1 counter is removed from Protean Hydra

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

you gain control of target opponent during that player's next turn

you may pay {2} and exile this card from your hand face down

Cavern of Souls (Foil Etched) - (Foil): Double Masters 2022 Acabado:Foil Whenever a +1/+1 counter isAs 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.