Shelldock Grave enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Shelldock Grave: Add or to your mana pool.
, : Exile target artifact, then return it to the battlefield under its owner's control.
: Add 
or 
to your mana pool. or to your mana pool.
, : Exile target artifact, then return it to the battlefield under its owner's control.
