Sles, Whirlwind of Blows

Haste, Vigilance, Bloodthirst 2
(If an opponent was dealt damage this turn, this permanent enters the battlefield with N +1/+1 counters
on it.)
{1}{w}{r}: Sles, Whirlwind of Blows gains
double strike until end of turn.
"Her blade goes swish, and they go swoosh."