Ivajlo, Destroyer of the Weak

{p/b}: Reveal Ivajlo, Destroyer of the Weak from your hand. Put a Weakness counter on up to
one target creature. Activate this ability only during your turn.
When Ivajlo, Destroyer of the Weak enters
the battlefield, exile all creatures with weakness tokens on them unless their controller pays {p/b}{p/b}{p/b}