Shelldock Gate enters the battlefield tapped.
: Add to your mana pool. Shelldock Gate doesn't untap during your next untap step.
: Shelldock Gate becomes a 0/4 white and blue Merfolk creature with defender until end of turn. It's still a land.
: Add 
to your mana pool. Shelldock Gate doesn't untap during your next untap step.
: Shelldock Gate becomes a 0/4 white and blue Merfolk creature with defender until end of turn. It's still a land.
