Sellsword of the Free Cities

Whenever Sellsword of the Free Cities
enters the battlefield or attacks, you may
pay {1}. If you do, it gains first strike and
haste until end of turn.
In a room sit three great men: a king, a priest,
and a rich man with his gold. Between them
stands a sellsword. Who lives and who dies?
~ Varys, to Tyrion Lannister