clouds" and "landed on the mountains of [the] Conmaicne Rein in Connachta", otherwise Sliabh an Iarainn, "and they brought a darkness over the sun for three days and three nights". They immediately burnt the ships "so that they should not think of retreating to them, and the smoke and the mist that came from the vessels filled the neighbouring land and air. Therefore it was conceived that they had arrived in clouds of mist". A poem in the Lebor Gabála Érenn says of their arrival: It is God who suffered them, though He restrained them they landed with horror, with lofty deed, in their cloud of mighty combat of spectres, upon a mountain of Conmaicne of Connacht. Without distinction to discerning Ireland, Without ships, a ruthless course the truth was not known beneath the sky of stars, whether they were of heaven or of earth. According to Tuan: From them are the Tuatha Dé and Andé, whose origin the learned do not know, but that it seems likely to them that they came from heaven, on account of their intelligence and for the excellence of their knowledge. Led by king Nuada, they fought the First Battle of Magh Tuireadh on the west coast, in which they defeated and displaced the native Fir Bolg, who then inhabited Ireland. In the battle, Nuada lost an arm to their champion, Sreng. Since Nuada was no longer "unblemished", he could not continue as king and was replaced by the half-Fomorian Bres, who turned out to be a tyrant. The physician Dian Cecht replaced Nuada's arm with a working silver one and he was reinstated as king. However, Dian Cecht's son Miach was dissatisfied with the replacement so he recited the spell, "ault fri halt dí & féith fri féth" (joint to joint of it and sinew to sinew), which caused flesh to grow over the silver prosthesis over the course of nine days and nights. However, in a fit of jealous rage Dian Cecht slew his own son. Because of Nuada's restoration as the leader, Bres complained to his family and his father, Elatha, who sent him to seek assistance from Balor, king of the Fomorians. The Tuatha Dé Danann then fought the Second Battle of Magh Tuireadh against the Fomorians. Nuada was killed by the Fomorian king Balor's poisonous eye, but Balor was killed by Lugh, champion of the Tuatha Dé, and who