Skyrim: enchant 4 pieces of clothing that reduce destruction spells 25%. You now don't use any mana for attack spells. (not sure if it counts, but it just takes the ability to spam enchantment until you're skilled enough.)
That doesn't break the game though, I've just been playing it like that for hours and it's so much weaker than just using a bow at all.
Destruction magic is so gimped in Skyrim.
- Destruction enchants only reduce casting cost. Bow enchants increase damage, up to 50% or more on 4 separate pieces of gear.
- Destruction gets 3 talents that boost each individual element by up to 50% damage, takes 6 points to get them all. Bows have one 5 point talent that boosts damage by 200%, plus a 3 point talent to crit 20% of the time for 50% more damage. And...elemental damage enchanted bows benefit from those same destruction talents.
- Spells always do the same amount of damage. Bows can be smithed to crazy heights, and you can use higher quality arrows to increase damage further.
- With destruction magic you have to play the element game, and almost everything in Skyrim resists something, especially frost. Bows only have armor to deal with and it's honestly never a problem.
- Magic doesn't benefit from being cast while sneaking. Bows can deal triple damage when fired from stealth.
- Most destruction magic causes big physics explosions that sends objects flying and can lose you rare items that get lodged under geometry. Bows are precise, non-disruptive, and silent.
Yeah if you want to talk about strategies that break the game...stealth and bows destroy Skyrim. A completely maxed out bow shot from stealth can do 4,300 damage, or maybe even more, could be forgetting some other modifiers you could add in like orcs doing double damage with their daily power. I've one shot dragons.