Rainbow Teleportation

A Rainbow is a bow of seven different colors which appear in the sky when it rains, due to the sun shining through the rain which causes prisms. In Charmed, rainbows are used for a leprechauns teleportation. The leprechaun waves his sheleiligh and says "Go ndeiridh an bothair leat!" and the rainbow appears. The leprechaun and whoever is traveling with them steps into the rainbow and it brings them to wherever they want to go, often to a pot of gold. Seamus, a leprechaun, once told the Charmed Ones that the rainbows are always in the skies but are only visible when it rains.