Koce-plannushune, the rage

When Koce-plannushune, raging death
enters the battlefield, exile {x} target cards
and put a rage counter on them.
When Koce-plannushune, raging death becomes blocked or is blocked, the opponent that controls
that player must pay {r}{r}{r}{r}{x}
or exile that card with a rage counter on it.
{1}{p/r}{x}: You may cast target card in exile with a
rage counter on it.