Collectible Card Game Headquarters

Describe the Bug:
When Karn Liberated restart ability is activated, all cards are removed from play, EDH and RuleEngine included, which result in messed up cards relying on them.

Which card did behave improperly ?
Karn Liberated

Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
2014/02/18: Born of the Gods v2 - DUEL

What exactly should be the correct behavior/interaction ?
Karn Liberated restart + EDH/RuleEngine = no bugfest

Are any other cards possibly affected by this bug ?
-

Even before restart there are some weird issue with Karn Liberated and EDH.



RFG message while Commander was not in play



Once restarted, Witchbane Orb give hexproof to all players



Spells relying on RuleEngine cannot be cast



Some spells can be cast without target, and so on...

Fixed in 279af21

I tested this with several EDH decks of mine that run Karn Liberated. The severe bugs stassy mentioned in the original report are fixed as of CoRM15 mini2.

However, there are 2 bugs regarding the actual rules and 1 very minor cosmetic issue:

1) The EDH rules engine card will retain all its Energy counters when the game is restarted via Karn. this means that the respective commander will cost more for each time it had been cast from teh command zone before the game was restarted. Restarting the game should reset that, i.e. remove al Energy counters from the EDh card.

2) If a commander is in its owner's graveyard (e.g. due to discard, mill or declining to return it to the command zone) at the time Karn's -14 ability is activated, that commander will not be in its owner's command zone after the restart.

3) This seems cosmetic, but might fuel bug 2: The legacy effect card named after the respective commander that is usually attached to the EDH rules engine card vanishes when the game is restarted. Unless the respective commander was in its owner's graveyard at the time Karn's -14 ability was activated, it can be cast from the command zone nonetheless.

All fixed (hopefully) in c716413
Also improved interaction with Planes.

As of CoRM15 mini4, Energy counters are removed from the EDH Rules Engine card and commanders are returned from their owner's graveyards to the respective command zones when the game is restarted by Karn's ability, so the bugs I reported last time are both fixed.

Not sure if these are new, but I noticed that energy counters used for counting the number of spells cast during a turn (=storm count) remain on the regular Rules Engine card when the game is restarted via Karn.
Also, if Karn's controller had played a land on the turn during which the game is restarted (prior to the restart), that player can't play a land on that turn after the game has been restarted.