At the beginning of your end step, if you didn't cast any spells this turn, Shelldock Temple deals 1 damage to you.
: Add 
 or 
 to your mana pool.
Put Shelldock Temple on top of your library: Add 
 to your mana pool. 
: Shelldock Temple becomes a 2/2 white Angel creature until end of turn. It's still a land.