Lake Cairns enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Lake Cairns: Add or to your mana pool.
, , Sacrifice Lake Cairns: Target player draws two cards, then discards two cards.
.
: Add or 
to your mana pool. or to your mana pool., , Sacrifice Lake Cairns: Target player draws two cards, then discards two cards.
