Collectible Card Game Headquarters

Describe the Bug:
AI attacked with Angel of Deliverance and delirium was on and Angel of Deliverance got exiled as soon as picked for attacker? I didn't even see it on attackers window.

Which card did behave improperly ?
Angel of Deliverance

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
Manalink 2016/08/27: Eldritch Moon v2, duel

What exactly should be the correct behavior/interaction ?
Angel of Deliverance delirium ability triggers when it deals damage and exiles opponent creature.

Are any other cards possibly affected by this bug ?
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It doesn't exile itself, but target creature its controller controls (instead of opponent).

Also the ability is optional instead of mandatory.

Also Angel of Deliverance triggers whenever it attacks and not whenever it deals damage.

Fixed all in commit 7ac2ed25.