[Tuidjy]

Assassins attack a random enemy commander in a province. I have never attacked
a hidden unit, although that does not mean it's impossible.

If the commander has bodyguards, your assassin spells may end up targeted at the
bodyguards.

If the assassin has bodyguards, they do not help him in an assassination attempt.
If he has units that are automagically summoned, like for example the air
elemental from the Bag of Wind, they will fight in the assassination attempt.

As a rule, a well equipped assassin will take out 99% of the targets. As a rule,
a well equipped assassin is a waste of equipment, because they usually die when
a patrol catches them.

An effective very early game assassin is anyone with a skull earing (5 death
gems, summons a skeleton for 5 fatigue)

An effective early game assassin has boots of flight, and a nasty weapon.
Everything else is too much investment.

My ex used late game assassins in Dominions II. I think I have a snapshot of her
"creative" assassins somewhere. I considered them a hell of a waste of gems.
For fewer gems you could get a thug that just takes out the damn province. As
a matter of fact, her assassins did, when the patrols rooted them out.