If a Hidden Blade is reacted to with another Hidden Blade targeting the same unit, how many cards should you draw: 2 or 4?

Ruling: You draw 2 cards total. The first Hidden Blade resolves, killing the unit and drawing a card. The second Hidden Blade cannot establish "its controller" because the unit is now out of play, so it does not draw a card.

Sequence:

• First Hidden Blade resolves, killing the unit and drawing 1 card
• Second Hidden Blade cannot establish its controller since the unit is out of play
• Total cards drawn: 2 (1 from the first Hidden Blade resolving, 1 from the second Hidden Blade being played but not resolving fully)