Cactus Game Design Message Boards

The wording "opponent may not" leads me to believe it should be a restrict, not a prevent. It's possible that's either an incorrect errata or an old one leftover from before "restrict" was a defined game word.

This has been ruled as a restrict, as it is worded as a restrict.  I know Justin Alstad used a T2 deck within the past year or so that used the BtC/Mayhem combo and pulled it off, so my guess is that errata is incorrect.

I am not sure where that errata is from, but it is most certainly incorrect. The ability to draw cards during draw phase and the ability to make a rescue attempt are game actions, not preventable abilities.

So I flipped out last night over something that wasn't even legal

I'm not sure where you're getting that from. Game actions are perfectly restrictable even if they aren't preventable.

From the redemption wiki which was taken from the REG

What REG?  If it is not from the new REG (which has no specific erratas in it), then it cannot be from the current REG.  And if it is not an official errata, then it is not correct.  There was an attempt at one point to translate old abilities to modern "play-as," but if they changed the way the card worked (like this one), then they are to be disregarded unless there is an actual errata at play.

There is no errata for this card that I can find, use the original ability.  It is a restrict, not prevent.