Island Grove enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Island Grove: Add or to your mana pool.
: Island Grove becomes a 2/1 blue and green Merfolk creature until end of turn. It's still a land.
.
: Add 
or 
to your mana pool. or to your mana pool.: Island Grove becomes a 2/1 blue and green Merfolk creature until end of turn. It's still a land.
