Cavern of Souls (345) Mobilize where X is the number

where X is the number of +1/+1 counters on it

then you may put a permanent card with mana value less than or equal to the number of lands you control from your hand onto the battlefield tapped

: Return target creature card from your graveyard to the battlefield

if there are fourteen or more cards in your graveyard

Cavern of Souls (345) Mobilize where X is the numberThe Lost Caverns of Ixalan Cavern of Souls Land As this land enters, choose a creature type. : Add . : 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. Illustrated by Pedro Correa All Magic: The Gathering (MTG) card images and symbols Wizards of the Coast