Shamrock

The automaton, on patrol for anomalies, spotted something from a long ways off. In an entire field of clover, there stood out this one item that it's programming was at a loss for, for approximately .000015 seconds, an eternity for one such as itself.

It approached, bent and plucked it for a closer examination by its optical sensors. Curious, a clover with four petals, while so many others had three, this was supposed to bring luck. A Lucky day!