In a black aggro or midrange deck, you can cast an Evolved Sleeper on turn one or a Tenacious Underdog on turn two, then cast Gix
Here are some of the important roles cards need to play in this deck: Spells with kicker, like Blink of an Eye and Cunning Geysermage
Very flexible, this angel is interesting in Commander because it fits nicely in decks exploiting artifact, go-wide, and token strategies
The safe choice is to leave it banned, but I don't think Hypergenesis is as far away from being safe (or as safe as the other cascade-into-free-spell cards) as many people think
Colorless Honorable Mention Best Common Best Uncommon Top 5 With both cast and attack triggers, Cityscape Leveler will cause lots of destruction
In Squirtles case, the result was oddly charming