LE42 Bladewind
Action: Target opponent discards a cardfrom his hand. Then, draw a card.

If there is not any card in my opponent's hand, Can I play the Bladewind's action and draw a card?

Thanks for replay...

cchopman said:

I think no and no, latter definately as your opponent hasn't discarded a card, thus the "then" clause isn't fulfilled:

"If a card uses the word “then” the
preceding effect must have resolved
successfully before the effect following
the term “then” can be resolved." (FAQ, p. 4)