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Describe the Bug:
AI attacked with some creatures I blocked all but 2 of them
Horror of the Dim and Nirkana Cutthroat with 1 level and Shadow of Slice ciphered on it.I had only 3 life and I cast Scars of the Veteran on me to prevent the 7 damage these unblocked creatures would deal and I got this parameters error and then game continued without apparent problem.

error | Open

bad parameters
get_card_instance(0, -1)
0: 0x02467F44
1: 0x0241DED5
2: 0x02417A1D
3: 0x02016C20
4: 0x00457E4A
5: 0x02475ED5
6: 0x0242959D
7: 0x0242A0AE
8: 0x0242A361
9: 0x004367C3
10: 0x0242A5BA
11: 0x004766DC
12: 0x024297BB
13: 0x02429E87
14: 0x004371CE
15: 0x0043D326
16: 0x00439A10
17: 0x0047902C
18: 0x004946E9
19: 0x7C80B729

Which card did behave improperly ?
Scars of the Veteran?

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 ?


Are any other cards possibly affected by this bug ?
-

Not limited to your situation, happens whenever it prevents damage to a player.

Also when Scars of the Veteran effect card goes away at eot 2 artifact mana are added to opponent's pool at least if you prevented life from you.The artifact mana stays floating until end of game unless opponent has artifacts to cast.

These have already been fixed in dev, now closed.