Good idea with the Nymph, have one too
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Played a very similar version, Elite Charger for the Graboid and I added an Entropy Pendulum for a QT, just felt like I was always running low on entropy quanta, in fact I'm not sure the nymph is really better than am for that reason (tho it's often a good nightmare target).
Anyway, great results, currently at 27-4 (including all the versions I played) in pvp 2 with it ^^