What do you find OP about wands? A few things to consider:

• Easy to identify curses with small detrimental effects
• They have no strength requirements
• No need to identify them (either cursed or otherwise effect is known)
• Unlimited range ammo over time
• Damage ignores armor
• Hits ignore evasion, essentially guarantees a hit
• Applies status effects, which can be very useful

Do you upgrade them at all? Swarm Intelligence means you will fight many enemies at the same time. In this run, I had I spent half (4 upgrades) on my Wand of Fireblast. It often crippled targets while doing area-of-effect damage (AoE) which is great crowd control, on top of making a ton of damage over time (DOT), was easy to renew by kiting enemies through a door or grass which renews fire debuff. So yea :)

Which wands stand out for you? Corrosion and Fireblast both have great AoE and DOT. Best two in my opinion. Disintegration is also very powerful since it can pierce terrain and do bonus damage per terrain/enemy pierced! Lightning has the best immediate damage wand, use it when the initial target is in water to increase damage and arc radius to 2 tiles. Corruption can debuff crippled, slowed, or chilled making slow-kiting enemies possible, strong with soul-mark and Warlock build. Blast Wave yoinks enemies off chasms, onto traps, and creates distance. Very fun. Warding can set up a safety room, or before bosses (including two phases of Tengu, DM-300 pylons, Dwarf King, Yog). great way to check for enemies when playing the ‘Into Darkness’ challenge.