Counterspell would be more interesting+cooler if it was a mechanic instead of being a singular spell.
Something like
Counterspell.
When a hostile creature casts a spell, you may attempt to counter it with a thematically appropriate spell of your own that has a casting time of one action or one bonus action. Solely for the countering, its casting time changes to a Reaction.
A thematically appropriate spell will typically be one that exists in opposition to the spell being cast - Fireball may be countered by a Cold damage spell, Cure Wounds by a spell that deals necrotic damage or inflicts a curse, Fly by a gravity or earth-binding spell, Bless by Bane, or divination by an illusion or enchantment that tricks the mind and bewitches the senses.
Counterspell this dispel that. Back in my day we just punched nerds in the throat or backhanded them back to magic school. Catching fire catch these hands https://youtu.be/FeahzYGuIKY?si=pXlqsE6IUw0AMF-G
Flat-footed is fine as a condition but was mostly folded into advantage/surprise so losing it isnât a problem. Wouldnât hate it if they brought it back as a way to boost up heavy armour types and nerf the dexterity users, but itâs not really a big deal either way.
Touch AC can remain banished to past editions though. Completely and utterly unnecessary in 5e.
I come from a terrible and dark land where there is no counterspell, but your entire 4th level spells are taken up by Greater Malison, 5th level spells are taken up by Breach, we keep Ruby Ray of Reversal on tap for any Liches and we have a gentlemanâs agreement not to use Mislead as itâs fundamentally broken on any sort of Mage/Thief.
For some reason it reminded me of that old meme/story of a Dragonborn Wizard dying at session 1 because he headpated the tiefling who didnât like being touched, and she bit his hand, rolled a crit, and the Wizard bled out and failed all the saving throws.
Wizard: âOh well, it seems like I am out of spell slotsâŚâ -flings robe off, revealing boxing shorts and the 6-pack Of A Demigod- "I guess this will have to suffice. I cast - FIST!"
As much as sometimes the âsequels, prequels and everything elseâ of popular films and shows can grow a little stale, I would probably make an exception for seein Denken in his prime.
Man must have been a force of nature.