Explain why a creature should not get the melee +1 bonus on each of a double or triplestrike's attack. Please read the CoK rulebook about Wounded Prey not the ability on the mage card. Please be sure to explain how the multiple attacks of an attack action do not receive the buff if you beleive it to be so.
I beleive based on wording and rulebook/codex definitions a creature with a double strike should get the melee +1 on both attacks made against the target.