This is clearly a GRV, so our options to fix it here are to leave the game
as is or to rewind. Nothing has happened since the error, so there's no
reason not to rewind here. So where do we rewind to? To the point of the
error, of course, but when was the error made? I would say that the error
wasn't in paying life for Blood Crypt's replacement effect but rather
having it then enter the battlefield untapped. The choice to pay life is
still a legal choice for AP here, so we rewind to just after that choice
was made and have the Blood Crypt enter the battlefield tapped.
On 19 May 2017 at 07:02, Siyang Li <
forum-35579-3a53@apps.magicjudges.org>
wrote: