When Tree Fortress enters the battlefield, sacrifice it unless you pay 1 life.
: Add to your mana pool. Tree Fortress doesn't untap during your next untap step.
: Target 1/1 creature gets +1/+0 until end of turn.
: Add 
to your mana pool. Tree Fortress doesn't untap during your next untap step.: Target 1/1 creature gets +1/+0 until end of turn.
