When Centaur Delta enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
: Add to your mana pool. Put Centaur Delta on top of your library.
Cycling (, Discard this card: Draw a card.)
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Centaur Delta on top of your library. (, Discard this card: Draw a card.)
