Saheeli, the Gifted is a fine commander, with her ability to add a bunch of mana with her second +1 being especially scary, but she suffers from the fact that there are a bunch of artifact-based Commanders available, including the extremely powerful Breya, Etherium Shaper, so being "fine" might not be enough to pick Saheeli, the Gifted as your Commander over other options
Storm interacts very favorably with magecraft
Liberty Prime, RechargedLiberty Prime, Recharged only takes up two energy a turn, and you can immediately net that back even as you pay it due to its vigilance and it's sacrifice ability
This pairs well with wizards that ping for damage, like Black Waltz No
By generating two additional creature tokens per turn, you can make them stronger with cards like Divine Visitation or double them with cards like Anointed Procession
its capable of scaling up to work with larger targets where mana is plentiful, and it even doubles as a nasty combat trick in a pinch