  Here we consider two phenomena in the vicinity of a black hole deformed by
the tidal gravitational force of surrounding matter and by a strong magnetic
field: equatorial motion of charged particles and the decay of a test scalar
field. We were able to analyze both phenomena with analytical and simple
numerical tools, which was unexpected given the low symmetry of the system. We
show that both the tidal gravitational force and the magnetic field strongly
enhance the release of the binding energy for the matter spiralling into the
black hole. In the presence of the magnetic field, the left and right handed
rotations of charged particles are not equivalent and for sufficiently large
$|q| B$ there are stable anti-Larmor orbits very close to the event horizon,
although Larmor orbits are only stable at some distance from the black hole.
The larger the tidal force, the closer the innermost stable orbit to the black
hole for both types of rotation. It was also shown that the real oscillation
frequencies of the characteristic quasinormal modes are considerably suppressed
by the tidal force.
