Shelldock Megaliths enters the battlefield tapped.
, : Add , or to your mana pool. Shelldock Megaliths deals 1 damage to you.
, : Exile target Cephalid, then return it to the battlefield under its owner's control.
, 
: Add 
, 
or to your mana pool. Shelldock Megaliths deals 1 damage to you., : Exile target Cephalid, then return it to the battlefield under its owner's control.
