Quote from PercivalTheAstralChampion >>

Technically this is better than the 2014 one since it gives the actual Incapacitated condition meaning immune creatures can still take actions.

That is true, though I think there are about two or three creatures in the entire official catalog that are immune to that condition.

Quote from PurplBanana >>

Ah, "Attack (one weapon attack only)" changed to "Attack (one attack only)." This means Valor Bards, Eldritch Knights, and Bladesingers can cast a (non-Eldritch Blast) attack roll cantrip with that action.

Though, if you are any of those people, you'll probably be casting True Strike, Green-Flame Blade, or Booming Blade - which already worked with the old wording. At least, I thought it did, and now it definitely does.

If you don't think this works because it says "one attack only" instead of "only one attack," Eldritch Knights still bypass this with their wording of War Magic - Fire Bolt is one attack as much as a standard weapon attack is in this case. I think it's clear that the intention is for 7th-level Eldritch Knights and 6th-level Valor Bards/Bladesingers to have equivalent Extra Attack features.

if you still don't think it works for the full casters because Haste overrules their Extra Attack feature, you must also think that they have to make both attacks in a non-Haste Attack action for one of them to be replaced with a cantrip. The feature says you *can* attack twice instead of once, not that you have to. What, if you decide to only make one attack - it can't be a cantrip? Say a Valor Bard is holding two daggers and casts True Strike as part of the Attack action, which triggers the Light Property. They make their Light attack, which kills the last enemy in their range, so they end their turn. Well, they didn't use the second attack of their Attack action, so they must've had to cast TS with the Magic action! Then how did they make the Light attack?

I really feel like you're being a bit too cheeky with the rules at the end there, if only because of the flippant tone of voice. It comes off like "I can totally game the system by SAYING I take the Attack Action to benefit from Extra Attack, when I'm secretly actually taking the Magic Action". Whether that works for your DM is up to them but if I were your DM I would challenge it.

Quote from VultureSniper >>

Quote from Jreamer >>

Because candy is dandy but licorice is quicker-ish?

oh, no, I had to look it up. It actually makes you GO faster. 

 Cause sugary foods gives you a quick boost of energy followed by a "crash," which is basically what Haste does.  

 A cup of coffee would work too.