World Enchantment
Creatures
can't
attack
a
player
unless
that
player
cast
a
spell
or
put
a
nontoken
permanent
onto
the
battlefield
during
their
last
turn.
As the world steeled itself for the New Phyrexian invasion, the heart of the Pinelands awoke, and a new maro-sorcerer strode forth to join the fight.