league_season_tax

$league_season = array(
	'relation' => 'AND',
	array(
		'taxonomy'         => 'sp_league',
		'terms'            => '123',
		'field'            => 'term_id',
	),
	array(
		'taxonomy'         => 'sp_season',
		'terms'            => '321',
		'field'            => 'term_id',
	),
);