Not only is it viable for competitive play, but its also relevant for collectors, with most online auctions for it currently indicating that its value is in the range of $45 to $110
Aim for 3040 actual zombies in a 100-card Commander deck so your tribal lords and whenever a zombie dies payoffs stay live, then fill the rest with ramp, removal, card draw, and lands
Grizzly Fate, on the other hand, serves as a surprisingly powerful win condition, turning the late game into a flood of inevitability
This makes it easier to sell or trade your card with confidence
I did some nonsense via spreadsheet before I actually noticed that there is a post on the forums with pretty much all of the economy elements outlined
Innovation is unwelcome at Wizards