As far as I've seen (on the forum
) some nymphs can be used effectively in a rainbow as long as they are the only card using certain element. Air nymph is a good example, though I guess one could build a rainbow around purple nymph (
mark + supernovas ), death nymph (malignant cell spam + creature control, though would need
mark probably)...
I'm not sure, but probably earth nymph + gravity shield could also be a nice combo in a rainbow... (just need some lobo to counter momentum)
Though I'm pretty sure these variants would have a lower winning percentage than standard rainbow due to the fact nymphs can only be used in late game, but still possible to use I guess.