Ukonvasara
Ukonvasara, or Ukonkirves, is the symbol and magical weapon of the Finnish thunder god Ukko, similar to Thor's Mjölnir. Ukonvasara means hammer of Ukko; similarly, Ukonkirves means axe of Ukko. It was said that Ukko created lightning with Ukonvasara. Ukko's hammer was probably originally a boat-shaped stone axe. When stone tools were abandoned with the advent of metalworking, the origins of stone weapons became a mystery. Stone axes, so-called thunderstones ("ukonvaaja" in Finnish), were found in the ground, especially after drenching rains washed away dirt. They were believed to be weapons of Ukko, stone heads  of the striking lightning. Shamans collected and held stone-axes because they were believed to hold the power to both heal and damage. Modern Pagan Finns sometimes carry hammer or axe pendants around their necks, much like Christians sometimes wear crosses. Etymology. According to Asko Parpola, the Sanskrit and Avestan both refer to a weapon of the Godhead, and are possibly from the Proto-Indo-European root "*weg'-" which means "to be(come) powerful". It is related to Proto-Finno-Uralic "*vaśara", "hammer, axe", but both the Sanskrit and Finno-Ugric derivatives are likely Proto-Aryan or Proto-Indo-Aryan but  not Proto-Iranian, state Parpola and Carpelan, because of its palatalized sibilant. Perkūnas is pictured as middle-aged, armed with an axe and arrows, riding a two-wheeled chariot harnessed with goats, like Thor The name Thor descends from the Proto-Germanic theonym ('Thunder'), According to scholar Peter Jackson, those theonyms may have originally emerged as the result of the fossilization of an original epithet (or epiclesis) of the Proto-Indo-European thunder-god *"Perkunos". from which Perkunas also descended from Indra is described as using the vajra to kill sinners and ignorant persons. Indra's mythology parallels Perun, Perkūnas , Taranis, and Thor, suggesting a common origin in Proto-Indo-European mythology.