When Hickory Cavern enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool. Return Hickory Cavern to its owner's hand.
, Sacrifice Hickory Cavern: Target creature gets +2/+2 until end of turn.
.
: Add 
to your mana pool. Return Hickory Cavern to its owner's hand., Sacrifice Hickory Cavern: Target creature gets +2/+2 until end of turn.
