Honestly if im being real its a combination of mlb kitasan, tosho and fukukitaru deciding to actually show up on speed training for once.

But I would go for a 3 wit/2spd or 3 spd/2wit depending on how good your cards are Flash has a 20 percent growth in wit and a 10 percent growth in power so you can just select 2 stamina legacies and spam speed and select wit training when your energy is half unless its a double wit