It goes like this:
- Your first Ullar Protector attacks Krug and places 1 wound on him.
- Your second Protector now rolls 1 extra die when he attacks, getting Krug for 2 more wounds.
- Your third Protector may now attack Krug, rolling 3 more dice than he normally would.
It's still 3 total attacks from the squad, but a lot of attack dice. Hope that was clear enough.