Grelda, Orc Executioner

When Grelda, Orc Executioner enters the battlefield, you may pay {r}{r} and destroy a
target creature, tap Grelda, Orc Executioner.
The most heartless creature of all of the orcs. Once to
be married to a young prince she chopped off his head
when he tried to beat her. This attracted the attention
of the orc war leaders and she was assigned to the
army to execute prisoners of war.