Get a town fountain by donating 250,00 Bells, and useing a REGULAR axe, press A right in front of it and Serena the goddess mouse will appear. Say that u threw a REGULAR axe, NOT GOLD, SLIVER, OR NOTHING.IF U DO, SHE GETS MAD AND KEEPS THE AXE. She'll give u the Golden,Silver, or regular axe 2 u, ask if she's Godessey, or get mad. Answer anything to the godessey question. There's a chance she'll give u the Golden Axe, The Silver Axe, or ur regular axe t@( HOW CAN SHE RUN OUT OFG AXES?!)
Nook sells it very rarely.
Knock out at least 8 items from the sky, and then it will randomly float around.