When Calciform Summit enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
Put Calciform Summit on top of your library: Add to your mana pool.
, Sacrifice Calciform Summit: Add to your mana pool.
: Add 
or 
to your mana pool.
to your mana pool. , Sacrifice Calciform Summit: Add 
to your mana pool.
