(: Add or to your mana pool.)
When Wave Park enters the battlefield, sacrifice it unless you pay .
: Wave Park becomes a 2/2 green and blue Wizard creature with trample until end of turn. It's still a land.
: Add 
or 
to your mana pool.).
: Wave Park becomes a 2/2 green and blue Wizard creature with trample until end of turn. It's still a land.
