Radha works best in 1-on-1 matchups.  She makes use of bloodrush, flash enchantments, and other instant-speed shenanigans to beat face and end the game as quickly as turn 5.  She is disturbingly consistent at putting pressure on your opponent before they have time to mount any sort of defense (unless your meta is loaded with low-cost removal...).

Brimming with commons and uncommons, many of which rarely see play in EDH, this deck has been fairly cheap and a lot of fun to build over the years, and it catches people satisfyingly off-guard, as people aren't expecting this much explosiveness from commanders they haven't seen in action.  There's nothing like dealing 14 general damage on turn 4 without casting a single card from your deck worth over 50 cents.