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I used to play as Gnomes; it was my favorite race until the Orcs came along.
Now, regarding dispelling and runes: If I cast a general plague, is it your turn? Keep in mind that as a mage, I take spellcasting, but if your Hellmar doesn't take spellcasting, he'll move much slower. And if he does, goodbye to either leadership, logistics, or attack...
And which rune will you use? If you have dispelling runes, you won't use energy, which means you might not reach me... And then, with my next spell, I cast a general dispelling spell...? And again, what will the Gnome do?
Will you use a dispelling rune or a thunderclap, for example? And keep in mind that Hellmar's general dispelling affects an area, not everyone. That's a big difference; I only cast Plague on an area, while other mass spells affect everyone. And Hellmar will constantly have to dispel spells; let's say he constantly gets a punishing strike, so what? There's no time to cast acceleration or stone skin anymore, plus the necromancer's casting speed... What will you win with? If your entire army is slowed down and under the effects of dispelling, and also plague?
Added 6 minutes ago
Plus, if I cast a defense-destroying spell on the Gnomes, their armor won't help... This spell is impossible to remove with anything, neither a rune nor dispelling.
Added 28 minutes ago
I develop a necromancer like this... I take a Dread Lord or a Vampire Princess.
Expert Defense: Steadfast, Immovable, either Stone Resilience or Magic Resistance.
Expert Spellcasting: Wisdom, Secret Revelation, Diversion.
Expert Logistics: Scouting, Keen Mind.
Advanced: Scouting, Secret Lore, Magic Attraction (either Dark Revelation or Spellcraft).
Expert Dark Magic: All three of the Lords of the Dead, or just Pain and Mind. Then, take Cursed Land.
And if you choose Eternal Light, I'll take Dark Replenishment.
That will be fun with spellcasting and a bonus to initiative cooldown:smile44:
Something like that.
For me, facing Necromancers is a thing of the past; I developed tactics against them early in my "career" playing as Gnomes. In my opinion, this is far from the strongest race against Gnomes (unless they have more than two castles).
Yes, Necromancers have strong dark magic and a numerous army, but you shouldn't forget what the Gnomes can counter with. First of all, it's "Gnomish Luck" - an amazing perk against magic, "Runes" - I mean the ones that dispel negative spells, and "Expert Light" - which removes negative effects from the area, so there is a way to counter Necromantic magic. And after that, in a fair hand-to-hand fight, Necromancers, as practice shows, lose quickly!
I have the impression that you're playing Necromancers against Gnomes who don't have a hero, and the Gnomes' army skips every turn! I'm telling you facts proven in numerous online battles - before you cast even two of your spells, you'll already have 75% of your army gone!
I definitely think that the Orcs are the most difficult race for Gnomes!