How do I resolve this ability?
Fully complete the first attack, including deathrites. Then, Bladedancer must take a step to a different location to be able to attack a new unit (or the same unit if it's oversized and occupies multiple locations). The step cannot be intercepted, but the attack is an actual second attack, following the normal attack sequence.
Market
$0.45
Low
$0.25
Median
$0.50