Eirana, Shadow's Emmisary

Ninjitsu {2}{b} ( {2}{b}, Return an unblocked
attacker you control to hand: Put this card onto
the battlefield from your hand tapped and attacking.
Whenever Eirana, Shadow's Emmisary deals
combat damage to a player, that player
sacrifices a land unless he or she pays 4 life.
"Start over, or suffer, your choice."