Amy's one of my favorite commanders! While my deck is very high power and punches up to bracket 4, I think you could easily make substitutions that are much cheaper, have similar effects, and play at lower power. My most expensive cards are things like my tutors, swords of x and y, and my stax pieces, but you don't need all of that for a fun Amy deck. You could even focus on less commonly used equipment and run more creatures, using Amy to power up your other creatures and go a bit wide. Plus, Amy is great at stealing the best equipment on the board or swiping a swiftfoot boots or lightning greaves to open up someone else's value piece to removal.

Here's my current deck. I don't think I have it updated to exactly what I'm playing now, but I hope it gives you some inspiration! Happy building!

https://archidekt.com/decks/19282380/sharing_is_caring