Originally posted by Russell Deutsch:
Okay, lets take this scenario one step further.
Allan attacks with Anafenza and Kalitas. Norma quietly double chump blocks and exiles her creatures.
Allan says nothing, and puts two 2/2 zombies on the field.
Norma calls a judge and claims Allan has just attempted to cheat, claiming the cards were exiled to Anafenza's ability and there was no indication or communication about zombies being put on the board.
What's the call? Does Allan get a GRV, a CVP, DQ'd or nothing?
As described, nothing happens, because there is no problem here. We correct the game state and move on. We do not penalize players for making assumptions about what choices their opponents are making–it's part of the way players naturally play the game–and even though this particular assumption was incorrect, no damage has been done to the game state because the opponent has noticed the error and acted to correct it immediately.
If Norma appears to want or need rules help, we will of course ask if she has any rules questions, and answer any she has. If Norma simply defers to Allan's assumption, that's fine too, because Allan's assumption was a perfectly legal choice for her to make–by deferring to that assumption, she has made it correct. And if Norma already has enough rules knowledge to know she's the one who gets to choose whether or not Allan gets zombies, she will act to correct any incorrect assumptions on Allan's part, so again there's no problem.