One of these named Ron or Rhongomynaid was used by King Arthur.
In the Ulster Cycle, one of these objects owned by Celtchar is kept in a cauldron of venomous black blood. One of these named Ron or Rhongomynaid was used by King Arthur. The warrior woman Scathach gave her trainee one of these objects. The island of Onogoro was made when brine dripped from a jeweled one of these objects, which was used to draw up Japan's islands by Izanagi and Izanami. Chiron's wedding gift to Peleus was one of these objects, which was later used to heal Telephus by Achilles. A sea monster's bones were used to make Gae Bulg, one of these things wielded by Cu Chulainn. Another one was stuck in Yggdrasil as a god hung from it to learn the runes. For 10 points, name these objects exemplified by Odin's Gungnir and the weapon used by Longinus on Jesus's side.
In the Ulster Cycle, one of these objects owned by Celtchar is kept in a cauldron of venomous black blood.
spears [or lances; or javelins; or polearms; accept naginata due to ambiguities with the Japan clue]