Death from attempting to move to a full zone is instant, not delayed like normal Destroy effects

[Patashu]

Normally, when a minion is hit by a Destroy effect, it is set 'pending destroy' and at the next Death Processing Step it is removed from play and its Death Event created.

However, if a minion dies because it tries to move to a full zone (such as due to Sap or Mind Control Tech), it instantly leaves play, instantly being unable to trigger, be triggered, interact and take up space. This kind of death looks very different in the logs too, and may have other kinds of different behavior. (For example, it is unknown how simultaneous regular deaths and deaths from full zone order together, or if all attributes are reset properly, and so on.) Triggers on its death correctly run in the next Death Phase.

http://hearthstone.gamepedia.com/Advanced_rulebook#Full_Zone_Instant_Removal

[Hearthstone Science] When Do Minions Die?

The hardest part about doing a "Feign Death" ! ｜妳這樣折騰妳妹妹好玩嗎？

[Patashu]

I've confirmed this in 3.0, using a full board, the last two minions being Coliseum Manager and Silver Hand Regent, in that order, and the hand was full. The summoned minion fills the 7th slot. In addition, if Soul of the Forest is cast, the Silver Hand Regent summons a minion to fill the new 7th slot, not the Treant. I also confirmed that Damage (and probably other attributes) reset when you move to the Graveyard in this way.

[culinko]

Tested with PattuX in 4.1: Sylvanas, Deathlord, 5 minions and then Feign Death while opponent has a Knife Juggler. No knives thrown.

Also, the following is incorrect in the Advanced Rulebook: Full Zone Instant Removal (2nd example) with Blessing of Wisdom and Freezing Trap is not related to this bug. This behavior happens also without a full hand, as can be seen in sections: "Mid-Phase removal and triggers" and "Combat" (Proposed Attack Events/Attack Events). Also confirmed in 4.1.