I have also encountered this problem, while the effect does appear to trigger the 4 times as stated on the card, it appears to do 0HP damage each time (I had 8 Gowen Level when I encountered this problem).
Due to the nature of the effect I suspect there could be a error where Gowen Level is fetched (Grabbing the wrong value or possibly encountering a default return). However since other "Gowen Level" based cards seem to be working fine, it might have something to do with the way it loops through the effect 4 times (Although I don't see why it doesn't simply read as "Gowen Levelx4", rather than the "Gowen Level, Repeat 4 times" , but thats more mechanics and less about this bug.)
PS. On another topic, but also about this card, unless I'm miss reading the card, isn't this card hideously underpowered? 5 SP for 5x4 "damage". Where as the Fire Arrow would already do 30 at 3 "Gowen Level"? (Ingoring the "Subtract directly" wording which I'm unclear of)
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