By the way, what blocks the crystal? Everyone around it rushes in, and nothing happens.
Although, while playing through the campaign, I realized that this is a good spell. It drains the most resources. So, I would place it and immediately destroy it. I did this about 15 times, and I chose almost hopeless battles!
Added 2 minutes ago
I'm in shock!!! I'm playing Zephyr's last mission. I maxed out the "Banish" skill, and with a spell power of 31, it doesn't dispel a bunch of summoned mobs from Biara!!!! oO
I had to use the Tome of Darkness and retrain skills to dark magic: blindness, enslavement, and Summon: Wall of Swords, Phoenix, Elementals, Crystals, Hive, to complete the mission.
So, here's my question - why doesn't "Banish" work the same way it did in the last mission of Heroes 5 when I fought Kha-Beleth and could recall 30 archdevils with a single cast?
Added 1 minute ago
By the way, "Enslave" and "Berserk" don't seem to work on Nightmare and Devil units in the Apocalypse.
Added 14 minutes ago
The imbalance comes from the fact that Sorrow is at level one... It should be higher...