I think that, if they wanted the card to be booth, they would have written something like this:
"...either melee damage and/or ranged damage..."
also, while writting about this card, this "condition" card (There a THEN) must fullfill the first condition in order to gain the THEN benefits. It is well explained in rules...
However, what is not explained in rules is: Do I have to fullfill the then? If opponent have 0 ressources, can I still play this card?
Thanks for your input!