  The stacking and bending of graphene are trivial but extremely powerful
agents of control over graphene's manifold physics. By changing the twist
angle, one can drive the system over a plethora of exotic states via strong
electron correlation, thanks to the moir\'e superlattice potentials, while the
periodic or triaxial strains induce discretization of the band structure into
Landau levels without the need for an external magnetic field. We fabricated a
hybrid system comprising both the stacking and bending tuning knobs. We have
grown the graphene monolayers by chemical vapor deposition, using $^{12}$C and
$^{13}$C precursors, which enabled us to individually address the layers
through Raman spectroscopy mapping. We achieved the long-range spatial
modulation by sculpturing the top layer ($^{13}$C) over uniform magnetic
nanoparticles (NPs) deposited on the bottom layer ($^{12}$C). An atomic force
microscopy study revealed that the top layer tends to relax into pyramidal
corrugations with C$_3$ axial symmetry at the position of the NPs, which have
been widely reported as a source of large pseudomagnetic fields (PMFs) in
graphene monolayers. The modulated graphene bilayer (MGBL) also contains a few
micrometer large domains, with the twist angle ~ 10$^{\circ}$, which were
identified via extreme enhancement of the Raman intensity of the G-mode due to
formation of Van Hove singularities (VHSs). We thereby conclude that the twist
induced VHSs coexist with the PMFs generated in the strained pyramidal objects
without mutual disturbance. The graphene bilayer modulated with magnetic NPs is
a non-trivial hybrid system that accommodates features of twist induced VHSs
and PMFs in environs of giant classical spins.
