Consecrated Sphinx

Nov 17, 2017 · The ability triggers once for each card an opponent draws. You choose whether to draw two cards as each of those abilities resolves.

Nov 17, 2017 · If each player controls a Consecrated Sphinx, their abilities will cause each other to trigger until one player chooses not to draw cards.

Nov 17, 2017 · You may either draw two cards or not draw at all. You can't choose to draw only one card.