This variant of Vegeta comes from Frieza Saga Z when he was killed by Frieza but later brought back with the help of the dragon balls.
His toolkit is completely focused on Offense and Buffing Saiyans at the expense of any Defensive capabilities.
Since the third balance update, his stats and Abilities were improved to make him a decent glass cannon.
Blast Buffing Toolkit
Every single part of EX Vegeta GRN’s Abilities Buffs his Blast Attack stat. Assuming he was able to get all five active at the same time and his star levels were maxed out, EX Vegeta GRN should be able to land a Blast Attack with +90% Damage on top of a 23% Buffed base stat.
No Room On The Bench
Some EX Fighters see the light of day on the battlefield. Even more EX Fighters, like EX Raditz BLU, are invaluable bench Support. Sadly, this Vegeta variant cannot even find room on the bench anymore unless there are absolutely not other options.
While this isn’t recommended, if EX Vegeta GRN is put on the core he should be put on a Team with a good Tank and Melee Fighter. This way EX Vegeta GRN can be set as the Blast Arts Card dump.
Otherwise, he makes a decent Z-Buffer from the bench.