It suffers from anti-synergy with tokens (and is locked out of mono-black Commander decks due to egregious color ID rules), but on the whole it does more good than ill a remarkable achievement for its cursed cycle
Letting all of your Shamans tap for two green mana is an incredibly powerful effect, and it includes Sachi herself, meaning if she survives till your untap step something big is almost certainly coming
The deck is very well-rounded and not overly reliant on our commanders to function
We want to hear it
(At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.) Enchantment Sheoldred, Whispering One Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) At the beginning of your upkeep, return target creature card from your graveyard to the battlefield
cards, and battle against your opponent