Plane — Karsus
Whenever
a
player
casts
a
spell,
that
player
flips
a
coin.
If
the
player
loses
the
flip,
counter
that
spell.
Whenever
chaos
ensues,
target
player
reveals
the
top
card
of
their
library.
If
it's
a
nonland
card,
you
may
cast
it
without
paying
its
mana
cost.
