First glance, one rainbow.
Look closer, double your luck
with two pots of gold.
According to Irish mythology, there’s a pot of gold rainbow belonging to a leprechaun (fairy) at the end of each rainbow, although first you must catch the leprechaun to find the pot. But before you have a go, you best assess your chances of succeeding by clicking on this link
The good news is that, even if you don’t catch the elusive little blighter, rainbows are meant to bring you luck.