for each
When an effect wounds (or exerts or heals) characters using the phrase “for each,” you may wound (or exert or heal) a character more than once. (See toil.)
Aragorn, Wingfoot says, “Each time the fellowship moves, you may wound a minion for each unbound Hobbit you spot.” If you spot two unbound Hobbits, you may wound two minions each once or one minion twice.
When a card says “for each companion over X,” that means the same as “do this Y times, where Y is the number of companions in the fellowship minus X.”
Anduin Banks says, “For each companion in the fellowship over 4, add 2 to the minion archery total.” If there are 4 or less companions in the fellowship, nothing is added. For 5 companions, 2 is added; for 6 companions, 4 is added; and so on.