triskelion or triskele sign icon set grey black color outline flat style simple image

abstract ancient around asgard black body celtic circular coil curve cycle cyclicality domination emblem grey harmony helheim helix icon illustration intercourse loki midgard motif nature odin ornament outline priest rotational set shaman sign soul spiral spirit swirl symbol thor three triad triangle trinity triple triskel triskele triskelion tryskel turning vector