use constant Earth => 0;
use constant Air   => 1;
use constant Fire  => 2;
use constant Water => 3;

my @elmt_name = qw( Earth Air Fire Water );

# Gorgon::element
return $elmt_name[ $self->{element} ];

# Gorgon::Euryale::transmute
$elmt = ($elmt + 1) % 4;

# Gorgon::Stheno::transmute
$elmt = ($elmt - 1) % 4;