Is it worse than Wrath of God for allowing
creatures to regenerate from it? Not until
regenerating creatures get more popular it
isn't. And since your own creatures can
regenerate from it too, that actually makes it
better than Wrath of God.
I do feel a little bad for everyone who
collected four copies of Wrath of God over the
years, thinking it was a core set staple, who
now has to update their Standard deck with a new
card. That is always inconvenient, but Day of
Judgment is a worthy replacement for the old
favorite. Its art and flavor text make you feel
no less powerful casting it. It is a slight step
down in power, especially with River Boa and
Cudgel Troll available in Standard. Will that
step down make a difference? Only time will
tell.
Today is number six on the countdown with Day
of Judgment the latest in the Wrath of God
family of effects, but much like the recent
Terror offspring Doom Blade it loses the
destroyed creature(s) can not be regenerated
clause.
For Constructed and Casual there isn't much that
needs to be said about a card that destroys all
creatures for a mere four mana. Wrath of God is
better unless you have a regenerating creature
of your own, but this is the kind of threat any
swarm will fear hitting the board.
With Limited this is absolutely a top pick in
Booster even if you are not playing White. Never
let this card get passed to the next player and
if it is early the option of switching colors
should be seriously considered. For Sealed it
would take a very weak White pool or incredibly
strong set of other colors to leave this out of
a deck. The double White out of the four mana
cost is a minor drawback of course, but the
ability to clear most of the board in such a
creature dominated format is nearly impossible
to top.
For Multiplayer the main thing to keep in mind
is how many people will your Day of Judgment
impact and how quickly you'll be able to finish
them off before they strike back. Have a game
plan and play this before a major finisher and
try to avoid using it defensively whenever
possible.