pale veil cager

when pale veil cager enters the battlefield exiles a target creature with X mana cost or less until pale
veil cager leaves the battlefield, where X is the
number of madness counters you have.
{4}:If you have 5 or more madness counters, exile
a target creature with a mana cost of X or less
until the pale veil cager leaves the battlefield,
where X is the number of madness counters you
have.