The possible UXOR-type variable MQ Cas has recently undergone a deep fade to magnitude 14.0 (visual estimate by me, 4 Sep 2011). Previously mis-catalogued as an Algol-type star, this very active variable should be watched! Chart available via the YSO website and soon, hopefully, from VSP.
Links:
[1] http://www.aavso.org/forums/variable-stars/young-stellar-objects-yso
