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Describe the Bug:
I think Siren's Call is supposed to kill enemy creatures that don't attack. But if I use Living Plane then Siren's Call kills my creatures instead.

Which card did behave improperly ?
Siren's Call

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

What exactly should be the correct behavior/interaction ?
Siren's Call should kill opponent's creatures that don't attack (not mine).

Are any other cards possibly affected by this bug ?
Not sure but I think it works ok by itself. But I have Living Plane in play, then it kills my creatures by mistake.

Seems like it doesn't even work by itself too.

Siren's Call doesn't work fine on it's own as it was discussed here about other cards with "force to attack" ability:
viewtopic.php?f=86&t=15409&hilit=Siren%27s+Call

Siren's Call doesn't force all creatures to attack and in addition doesn't destroy creatures of the opponent that didn't attack but it seems that it will destroy at the end of turn none,some or all creatures of Siren's Call owner!

Gargaroz could the problem of some/all of these cards that don't force attack be that some have duplicate existence in crc folder in both the recoded_cards.c and in Unlimited.c?
Especially Siren's Call which is a total mess have a couple of differences in those 2 codes.
As those cards were working fine just before they were re-recoded?
They worked fine in: Manalink Update 2014/05/06: Journey into Nyx
Broken after next patch: Manalink 9/9:Conspiracy for the recoding of M15-10/20new upd

Well, this last reported bug is fixed in 9eaab95
The "must attack" bug remain, but it's hardcoded matter.

Fixed for this we keep the other bug active for th "not force attack" part.