When Temple River enters the battlefield, sacrifice it unless you pay .
: Add or to your mana pool.
: Add to your mana pool. Put Temple River on top of your library.
, : Temple River deals 1 damage to target attacking creature.
.
: Add or 
to your mana pool.: Add 
to your mana pool. Put Temple River on top of your library., : Temple River deals 1 damage to target attacking creature.
