Goblin Karst enters the battlefield tapped unless you pay .
, Pay 1 life: Add or to your mana pool.
, , Sacrifice Goblin Karst: Draw a card.
Cycling (, Discard this card: Draw a card.)
.
, Pay 1 life: Add 
or 
to your mana pool., , Sacrifice Goblin Karst: Draw a card.
(, Discard this card: Draw a card.)
