  We report on a discovery of unexpected activities in two X-ray bright dwarf
novae. GZ Cnc showed an anomalous clustering of outbursts in 2002, in contrast
to a low outburst frequency in the past record. The activity resembles an
increased activity seen in some intermediate polars or candidates. We
identified NSV 10934, X-ray selected high-amplitude variable star, as a dwarf
nova with unusually rapid decline. The outburst characteristics make NSV 10934
a twin of recently discovered intermediate polar (HT Cam) with dwarf nova-type
outbursts. We propose that these activities in X-ray strong dwarf novae may be
a previously overlooked manifestation of outburst activities in magnetic
cataclysmic variables.
