Cast Sensei's Divining Top either from your hand or from the top of your library by paying 1.
Alela triggers, creating a 1/1 Faerie creature token.
Activate Ashnod's Altar by sacrificing the Faerie, adding CC.
Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
Repeat.
This clever loop turns the unassuming Sensei's Divining Top into an engine of endless value by leveraging the top of your library. While Mm'menon, the Right Hand lets you peer into your library and cast that very same top right back off the top using its own generated blue mana, Ashnod's Altar fuels the cycle by converting the disposable fodder into generous colorless mana. Meanwhile, Alela, Artful Provocateur watches over the proceedings, rewarding each casting of the artifact with a fresh Faerie token ready to be sacrificed to the altar.