[Progressor: Removed redundant quotation]
Just below average? Compared to vulture, hectic offensive, locust swarm, giant spider, treant, sea monster...? Sure those all have conditions, but none of them are very stringent. Generally, it's not that hard to get a return rate of about 2 damage per recruit. This card requires a quite uncommon condition (enemy magic equal to 6) to meet that goal, which requires quite a bit of luck (certainly more so than a condition like enemy wall > wall, or having another frenzy card in hand, and so on).
Even a vanilla attack card like troll gives you a much better return on your investment than 1 damage for 1 recruit.