Archived from groups: rec.games.trading-cards.magic.rules (
More info?)
Brent Williams, worshipped by llamas the world over, wrote...
> The following situation has been discussed at my local card shop.
>
> Player 1 has in play a Frost Wielder
> Player 2 has in play a Darksteel Colossus and no other creatures
>
> Player 1 pings the DSC with the FW then casts Chainer's Edict.
Darksteel Colossus
{11}
Artifact Creature
11/11
Trample
Darksteel Colossus is indestructible. ("Destroy" effects and lethal
damage don't destroy it.)
If Darksteel Colossus would be put into a graveyard from anywhere,
reveal Darksteel Colossus and shuffle it into its owner's library
instead.
Frostweilder
{2}{R}{R}
Creature — Human Shaman
1/2
{T}: Frostwielder deals 1 damage to target creature or player.
If a creature dealt damage by Frostwielder this turn would be put into a
graveyard, remove it from the game instead.
Chainer's Edict
{1}{B}
Sorcery
Target player sacrifices a creature.
Flashback {5}{B}{B} (You may play this card from your graveyard for its
flashback cost. Then remove it from the game.)
> So where does the DSC end up? shuffled into player 2's library or RFG?
Here we have two replacement effects trying to replace the same event.
(You can spot a replacement effect by the fact that it includes the word
"instead" or "prevent"; a few other things are replacement effects too,
but those don't matter for this example. If you're curious check section
419 of the comprehensive rules. Replacements also *tend* to start with
the word "if", but this is by no means a hard and fast rule.) According
to the comprehensive rulebook:
==========
419.9a If two or more replacement or prevention effects are attempting
to modify the way an event affects an object or player, the affected
object's controller (or its owner if it has no controller) or the
affected player chooses one to apply. Then the other effect applies if
it is still appropriate. If one or more of the applicable replacement
effects is a self-replacement effect (see rule 419.6d), that effect is
applied before any other replacement effects. If both players have to
make these choices at the same time, follow the "Active Player,
Nonactive Player rule" (see rule 103.4).
Example: Two cards are in play. One is an enchantment that reads "If a
card would be put into a graveyard, instead remove it from the game,"
and the other is a creature that reads "If [this creature] would be put
into a graveyard from play, instead shuffle it into its owner's
library." The controller of the creature that would be destroyed decides
which replacement to apply first; the other does nothing.
==========
To make that very long story short, the controler of the Darksteel
Colossus gets to decide which effect takes precedence; the other one
then finds itself with nothing to apply to, and doesn't happen. Of
course, that player will nearly always shuffle the Colossus into his
library.