A fight put off forever is already won
You can quickly find yourself attacking with massive creatures, pumped with your spells
They either play aggressively, which you can punish with your interaction and tapout play like Beza and Shiko or they play more passively, almost controlling, which you can punish by making land drops and casting Stock Up/Rediscover the Way
Murder clad in crimson beauty, An end to life and love and duty. Barrow witch incantation Illustrated by Mila Pesic Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Anyway, Kefka is the best commander of the FFVI options
With cards like Rite of Replication, you can create five extra token copies of Be'lakor, triggering all their enter-the-battlefield abilities and dealing upwards of 150 damage spread across any number of targets