My point is that usually a person has the opportunity to nearly certainly dispel one spell of their choice. The only other notably useful spell for combat after that is Enchanted Blades, and if you're going up against a low or no armour enemy like Undead, Daemons, Slayers, or any Light Infantry army then Enchanted Blades is all you really have and that can be stopped by focusing dispelling on it. Because you brought up Lore of Light just there, let me compare it. That has Speed of Light which will certainly give the enemy a -1 To Hit due to the now increased WS as well as removing any ASF rerolls and giving you +1 To Hit as well as making the Pit of Shades and other Initiative Test killers worthless where they would have been fatal on our I1 infantry, plus the spell is easy to bubble cast, Pha's Protection which gives a valuable -1 To Hit which stacks with other -1's from other things like Twtto's Iceshard Blizzard and is easy to bubble cast as well as giving a 50/50 chance of totally blocking non-BS shooting attacks like the Terrorgheist screams or cannons, Birona's Timewarp which gives an extra attack which is valuable for aggressive tactics and ASF to remove any ASF rerolls and if you can get Speed of Light off too then you get the rerolls which is insane on Saurus, and against low strength enemies the Net of Amnytok can mess up a careful strategy for your opponent and do some light damage on top of that. If your enemy dispels one of your valuable buffs here, you have more that you can use. This also gives you more adaptability and unpredictability which plays to your favour.