Lava Caverns

{t}: Add {r} to your mana pool
{4}{t}: Choose any number of players and/or permanents that have counters on them, then
remove one of each kind of counter that are
already there on these players or permanents
This large cave system is divided into a searing hot
area with flowing lava, and a nice cool area with beautifully pure water. It would be a wonderfully
mystical environment if it wasn't teeming with
monsters