Usually colorless direct damage has to be either
really expensive or really limited to see print,
since its being colorless means every color can
use it-- even green and blue, who are supposed
to be terrible at direct damage. This card
splits the difference--it's kind of
expensive(six mana total for a 4-point burn) and
kind of limited (needs snow mana), but by being
both, it makes each one easier to deal with.
Green will certainly be able to pay the cost,
what with Boreal Druid and Into the North. So it
seems that every color now has access to a
one-time shot of 4 damage to a creature. Four
colorless, uncounterable damage. Sounds good.
Mouth of Ronom
- Of all the nonbasic snow lands, this may be
the best one in limited. 4 damage is a hefty
amount, capable of killing most of the problem
creatures in the format, and it gives an edge to
some color combinations which would be without
decent removal otherwise like green/white. The
fact that it's a snow land doesn't hurt either.
It can allow you to use your snowy abilities
early and can be searched out with Into the
North.
Land-finding that doubles as removal is always a
good thing.
Too slow for constructed. One of the few removal
spells for Coldsnap that can do significant
damage at 4. Nice, because you can fit it in any
color deck, as long as you have some snow mana
to back it up. Probably too boring for casual.
Constructed - 2
Casual - 2
Limited - 3
Aburame Shino
Mouth of Ronom
I fell in love with this card the moment I saw
it. It's creature destruction on a land, which
means the opponent won't be able to counter it
(unless they run Squelch, but who uses that?).
Four damage to a creature is nothing to scoff
at, since almost all creatures in the current
format get destroyed by Mouth of Ronom, sans the
Dragons and Simic Sky Swallower. This is also
one of those cards that you use no matter what
if you get it in limited, since any sort of
creature removal is playable.
Constructed: 3.5 - Expect people to use this
card.
Casual: 4 - It's just so freaking cool.
Limited: 5 - Creature removal = good. Creature
removal for any color = Amazing.