Do enchantments stack?

[Sunder]

I was playing a deck with Megrim and warped devoltion. I had 2 of each out and I bounced a permenet back to my friends hand. I thought he would have to discard 2 cards because of warp devotion and take 8 damage because of 2 megrims. He said they don't stack but I can't seem to find the rules on it in the rule book. Can anyone clear this up for me?

Thanks.

[Einsteinmonkey]

Yes, they all work. They don't care about each other, and you just look at each of them separately. You bounce a permanent, Warped Devotion 1 sees it, he has to discard for that, Warped Devotion 2 sees it, he has to discard for that. Megrim 1 sees discard 1 and discard 2, Megrim 2 sees discard 1 and discard 2, he's taking 8 damage.

Nice evilness...

The only time that the enchantments care about each other is with World Enchantments (which are really old, and haven't been printed in a while, such as [card:723721f461]Hall of Gemstone[/card:723721f461]). There can only be one World Enchantment in play at a time. If there is one in play, and a player plays another one, the first one is put into the graveyard.