Collectible Card Game Headquarters

Describe the Bug:
When Avatar of Discord enters the battlefield, if its controller has at least 2 cards in hand, that player is forced to discard two cards without the option to cancel that discard in order to sacrifice Avatar.

Which card did behave improperly ?
Avatar of Discord

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
CoRM15 mini5, duel

What exactly should be the correct behavior/interaction ?
The discard can be canceled, sacrificing Avatar of Discord in the process.

Are any other cards possibly affected by this bug ?
-

Code adjusted in 4a2ae23, now you could choose to discard or not, and even change idea when you've already choosen the first card, as they'll be discarded all together when you select 2.