  Over the past years, experiments accumulated intriguing hints for new physics
(NP) in flavor observables, namely in the anomalous magnetic moment of the muon
($a_\mu$), in $R(D^{(*)})={\rm Br}(B\to D^{(*)}\tau\nu)/{\rm Br}(B\to
D^{(*)}\ell\nu)$ and in $b\to s\mu^+\mu^-$ transitions, which are all at the
$3-4\,\sigma$ level. In this article we point out that one can explain the
$R(D^{(*)})$ anomaly using two scalar leptoquarks (LQs) with the same mass and
coupling to fermions related via a discrete symmetry: an $SU(2)$ singlet and an
$SU(2)$ triplet, both with hypercharge $Y=-2/3$. In this way, potentially
dangerous contributions to $b\to s\nu\nu$ are avoided and non-CKM suppressed
effects in $R(D^{(*)})$ can be generated. This allows for smaller overall
couplings to fermions weakening the direct LHC bounds. In our model,
$R(D^{(*)})$ is directly correlated to $b\to s\tau^+\tau^-$ transitions where
an enhancement by orders of magnitude compared to the standard model (SM) is
predicted, such that these decay modes are in the reach of LHCb and BELLE II.
Furthermore, one can also naturally explain the $b\to s\mu^+\mu^-$ anomalies
(including $R(K)$) by a $C_9=-C_{10}$ like contribution without spoiling
$\mu-e$ universality in charged current decays. In this case sizable effects in
$b\to s\tau\mu$ transitions are predicted which are again well within the
experimental reach. One can even address the longstanding anomaly in $a_\mu$,
generating a sizable decay rate for $\tau\to\mu\gamma$. However, we find that
out of the three anomalies $R(D^{(*)})$, $b\to s\mu^+\mu^-$ and $a_{\mu}$ only
two (but any two) can be explained simultaneously.
