This is a very cutely designed card, with its
holistic elements supporting the gameplay very
well. A lot of people like the symmetry of even
numbers, but it's worth remembering what sorts
of numbers are associated with mystery and power
in folklore. There were twelve Olympian gods,
but such examples are lost among things like the
nine worlds of Yggdrasill, the three Fates, the
seven deadly sins, and so forth.
In Magic, every mana cost has significant cards
at it, but some tend to be important because
they fall at specific turning points in the
game: two is important because it sets the tone
for the rest of your deck's game, while four and
six are important because they shape your
finish. Unfortunately, this card's mana cost
means that it will be quite hard to get into
play to affect those turns, but its impact on
blocking will be relevant reasonably often, and
it may hinder your opponent from coming back as
well. It's a little unfortunate for this card's
prospects that Terror variants tend to cost
three nowadays rather than two, but it's still
an interesting ability that may end up being
relevant at some point.
Today's card of the day is Void Winnower which
is a nine mana 11/9 that prevents opponents from
casting non-odd mana costed spells or blocking
with non-odd mana cost creatures. This
shuts down many cards as it includes zero
converted mana cost plays and the large body can
be a serious threat with reduced options for
blocking. The high mana cost, even if
accelerated, keeps this mostly to Commander and
Multiplayer where it can be a dominant force
depending on the cards opponents have available.
This will be a very popular card in those
formats as it works in any deck and reduces
opposing options while being attached to a large
body, though it is less likely to see play
elsewhere.
In Limited this is a game ending topdeck with
mana available during stalemates or at minimum
works as a large threat for any deck that likely
reduces some blocking or casting options.
An obvious first pick in Booster and automatic
inclusion for Sealed builds with higher mana
curves.