Nah, just heard someone else say it before :P

Quote from RealBriGang >>

I just wish I could use it on multiple targets at a higher level.

Also, when it says "Attack (one weapon attack only)" is it saying that you can only use one attack action, however many multiple-attacks it is but not an extra off-hand attack? Or only that you get a single slash or stabbing or bludgeoning?

 You can make an offhand attack using a second weapon with a bonus action using the haste attack, however

Was doing a search for spells that affected movement and speed, and Haste didn't show up - This should probably get the 'movement' tag added to it.

Unfortunately "Hasted" is not available as a condition in your character sheet, but to quickly apply or remove its effects i created an item that you can toggle

https://www.dndbeyond.com/magic-items/1634274-ring-of-haste

I hope it helps, it does for me

Missing in the available for: Horizon Walker 

Quote from Mares4201 >>

I have druid with some level 3 wizard. Can I cast haste on myself and then use wild shape? Would the haste work?

If you can cast this level 3 Wizard spell, you can keep it up in Wildshape.

You just have to cast it before changing, then maintain concentration.

Can you stabilize a creature with a healer's kit using the hasted action. 

Gods I just wish a type of Cleric could cast this.

Quote from DarrthProfeszzr >>

Can you stabilize a creature with a healer's kit using the hasted action. 

 Yes you can. Using a healers kit is the "use an object" action. This is also why Thief rogues can use healers kits as bonus action due to fast hands

You can manually add a spell I think and force it to be cast. I need to check this though. 

The rule for sneak attack is it only procks once per turn even if you have multi attack

Quote from FatherAllerd >>

Gods I just wish a type of Cleric could cast this.

 The third party one called Zeal Cleric can

With this spell you can get your speed up to 300 feet without items, allowing you to move 1200 ft in one round (six seconds). 

Forgive me if I am wrong but Echo Knight + Action Surge + Haste lets you make twelve attacks for upwards of 24d6+60 (plus 36 if you have + 3 weapons) damage in around no? 140 damage in a round for up to two rounds for an average of about 300 damage in two rounds?

You can cast it on an enemy, and then drop it at the end of your turn - enemy loses their next turn :D

When you take the Attack Action with this spell, are you allowed to use Two Weapon Fighting?  For example, say you used your Standard action to attack twice, and then used your Hasted Action to attack.  Could you also use Two Weapon Fighting with your hasted attack?

two weapon fighting is using your BONUS ACTION to attack again after using an action to attack ..so if you i dunno use your actual action to cast the spell you could hasted action attack then bonus action two wepon fighting

and if you hit ofc and if your echo is within range and if you have someone to cast it on you

also 140*2 isnt 300 and definatly not 300 avarage ..your math on damage is weird

24*~3,5=84 +60(assuming you have 20str and a greatsword)= 144 avarage with a +0 weapon .. so twice about 288 in 2 rounds with 0 misses wich is very unlikely 

but jeah high level fighters can dish some insane damage with this spell 

It means the extra action is only 1 weapon attack. No multi-attacks or bonus actions (off hand attacks are bonus actions) are given. 

So, if I'm reading the spell correctly (RAW), a creature should be able to use the dodge action for their normal action and then use the attack action with their hasted action?  I mean, descriptively you'd be jumping through hoops to explain it but it's worth giving it a try.  :)