Enchantment — Aura
Enchant
enchantment
At
the
beginning
of
the
upkeep
of
enchanted
enchantment's
controller,
that
player
may
pay
any
amount
of
mana.
This
Aura
deals
2
damage
to
that
player.
Prevent
X
of
that
damage,
where
X
is
the
amount
of
mana
that
player
paid
this
way.
