(: Add or to your mana pool.)
When Unstable Isle enters the battlefield, sacrifice it unless you pay 1 life.
: Unstable Isle becomes a 2/2 blue Merfolk creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Unstable Isle becomes a 2/2 blue Merfolk creature until end of turn. It's still a land.
