Sakura, Crimson Death

Ninjutsu {3}{r} ({3}{r}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Sakura, Crimson Death deals combat damage to an opponent, it gains doublestrike until end of turn.
{r}{r},{t}: Sakura, Crimson Death deals 4 damage to target creature.