Council of Elrond

Can this card be used by the attacker in CVCC, to choose strikes for the attack?

nope, as the attacker can only play cards affecting strikes,

but it is different in DC rules where both can play cards affecting attacks, so attacker can play the dwarves are upon your for example

As a little bit of trivia: the rule that the attacker may not play cards that affect the entire attack comes from the Balrog Rules Summary.