When Tomb Springs enters the battlefield, sacrifice it unless you pay 3 life.
: Add or to your mana pool.
Put Tomb Springs on top of your library: Add to your mana pool.
, , Sacrifice Tomb Springs: Target creature gets -2/-2 until end of turn.
: Add 
or 
to your mana pool.
to your mana pool. , , Sacrifice Tomb Springs: Target creature gets -2/-2 until end of turn.
