The magic system in Heroes V [Discussion]

The magic system is excellent, in my opinion! I'm very glad they nerfed the overpowered Dimension Door and Town Portal spells. There's no longer a universal Wisdom skill; now, if you want to use high-level magic, you need to level up the specific skill for each branch. The Dungeon abilities that enhance magic damage and penetration of resistance immediately won me over, and the chance to cast with luck is also great :). Summoning creatures with mana is a good replacement for chain lightning, especially considering that each subsequent hero now costs 500 gold more than the previous one. I consider the unreasonably low damage of Implosion to be a drawback; after all, this is a 5th-level spell, and it only hits one target. It turns out that Meteor, Chain Lightning, and even Fireball are more effective.