(: Add or to your mana pool.)
When Krosan Coliseum enters the battlefield, you lose 1 life unless you reveal a planeswalker card from your hand.
, : Put a +1/+1 counter on target creature.
, : Counter target spell unless its controller pays .
: Add 
or 
to your mana pool.)
, : Put a +1/+1 counter on target creature., : Counter target spell unless its controller pays .
