KH2FM FFVII - COOKING Vexen with Master Genie and Master Form (first playthrough) 

Master Form's Haste ability is one of my favorite additions to this mod. By performing a special air guard with Triangle and having an enemy hit connect with it, "Haste" is activated and massively speeds up Sora's actions for 10 attacks, counted by the number over his head.
The Kingdom Hearts II Final Mix: Free Flow Virtuoso Improvements Implementation (FFVII) mod is made by ‪@Xaddgx‬. This version is pre-release V0.09. You can play this mod early too by subscribing to his Patreon.
This fight was done on LV34 Critical Mode / Challenge Mode as soon as Vexen's portal was available. Challenge Mode is an ability in this mod that allows for unlimited use of the drive gauge at the cost of heavily reduced damage done to enemies, and cannot be turned off once enabled.