two-flavour case there are different power counting schemes as to incorporate the spin three half field in a consistent manner [@Banerjee:1994bk; @Banerjee:1995wz; @Fettes:2001cr; @Pascalutsa:2002pi; @Long:2009wq]. It is an open challenge how to adapt such schemes to the flavour $SU(3)$ case.

A strict chiral expansion for the baryon masses following the rules of heavy-baryon $\chi$-PT appears futile. Applications to current QCD lattice data do not seem promising [@MILC2004; @LHPC2008; @PACS-CS2008; @HSC2008; @BMW2008; @Alexandrou:2009qu; @Durr:2011mp; @WalkerLoud:2011ab]. In oder to make progress we have to leave the safe haven of conventional $\chi$PT. State of the art chiral extrapolations of the lattice data set are based on the relativistic chiral Lagrangian with baryon octet and decuplet fields [@Semke:2011ez; @Semke:2012gs; @Lutz:2012mq; @Ren:2012aj; @Ren:2013oaa; @Geng:2013xn; @Lutz:2014oxa]. A quantitative reproduction of the lattice data requires a summation scheme and the consideration of counter terms that turn relevant at next-to-next-to-next-to-leading order (N$^3$LO). Any summation scheme, be it a phenomenological form factor, relativistic kinematics or the use of physical masses in the loop functions, is set up in a manner that the results of a strict chiral expansion are recovered to some given order upon the neglect of formally higher order terms. One may rightfully argue that possibly some 