  We consider an effective theory with a single massive spin-2 particle and a
gap to the cutoff. We couple the spin-2 particle to gravity, and to other
lower-spin fields, and study the growth of scattering amplitudes of the
particle in the Regge regime: where $s$ is much larger than $t$ and also any
mass scales in the effective theory, but still much lower than the cutoff scale
of the theory and therefore any further massive spin-2 particles. We include in
the effective theory all possible operators, with an arbitrary, but finite,
number of derivatives. We prove that the scattering amplitude grows strictly
faster than $s^2$ in any such theory. Such fast growth goes against expected
bounds on Regge growth. We therefore find further evidence for the Swampland
spin-2 conjecture: that a theory with an isolated massive spin-2 particle,
coupled to gravity, is in the Swampland.
