Lord Aizen, the Deceiver

When Lord Aizen enters the battlefield, secretly choose three of the following effects, distributed in any way amongst your opponents.
Reveal the player you chose when they:
* Draw their 2nd card this turn. Discard that card, then draw a card.
* Activate the activated ability of a permanent they control. Destroy that permanent.
* Exile target creature attacking you if it's controlled by the chosen player.
Activate each only once.