Alexstrasza, Dragon Queen

You may play Dragon cards from your hand
without paying their mana cost. If you do,
they fight target creature an opponent controls.
You may skip your end step.
In each player's end step, they sacrifice
a creature or pay 5 life.
Slayer's loot: Your creatures gain Double Strike
and +2/+2.
Is a life in Dante's Inferno really life?