River Carnarium enters the battlefield tapped unless you pay 1 life.
, : Add , or to your mana pool. River Carnarium deals 1 damage to you.
, , Sacrifice River Carnarium: Target player draws two cards, then discards two cards.
, 
: Add 
, 
or to your mana pool. River Carnarium deals 1 damage to you., , Sacrifice River Carnarium: Target player draws two cards, then discards two cards.
