Highwayman

First Strike.
Veterancy — At the end of combat, if this creature
dealt lethal damage to an opponent's creature for
the first or third time, it gains +1/+0 and +1/+1 respectively.
{1}{r}: Highwayman gets +1/+0 until end of turn.
(Activate this ability only once per turn)
"Elusive, evasive, persistent - righteous traits
for a rogue."