Island Catacomb enters the battlefield tapped unless you control an enchantment.
: Add or to your mana pool.
: Add to your mana pool. Put Island Catacomb on top of your library.
: Regenerate target Rat Skeleton.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Island Catacomb on top of your library.
: Regenerate target Rat Skeleton.
