17 Nov 2017
The ability triggers once for each card an opponent draws. You choose whether to draw two cards as each of those abilities resolves.
17 Nov 2017
You may either draw two cards or not draw at all. You can't choose to draw only one card.
17 Nov 2017
If each player controls a Consecrated Sphinx, their abilities will cause each other to trigger until one player chooses not to draw cards.