Land Arena

{t}: Add 1 of any colour 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
In the middle of the arena, there is a gathering spot
where you can find 2 Lifepowders. There are also 3
more gathering spots around the arena's edge