Do you Evony?: Capturing an NPC Level 10 under 6 minutes with 40 attacks

Requirements:

a. 96K archers, 2K workers, 572K warriors (could be done with 472K warriors)
b. 40 heroes includes 1 with attack at least 150+ (fully geared) hero (Tried with a hero with 111 attack attribute - successful but losses are twice as much)
c. any NPC Level 10 up to 100 miles away
d. 1 city with a Rally Spot level 10 - just for the 3 100K spearheads
e. camp time knowhow and 15-30 min of prep time
f. title that allows you to have an additional city
g. techs (archery, military tradition, iron working, compass and medicine) in academy at level 10 (preferably) - since you are capturing an NPC 10 that has everything at level 10. No ballistas/transports - so no need for HBR and logistics to be at 10.

SIDE NOTE: The need for 40 heroes is merely for convenience of being able to send 40 attacks under the 6-minute period. If you do not have these number of heroes but understand the concept of the 6-minute period, you can still conquer a 10, using less number of heroes but longer capture time and more troop loss. You would simply send 20k warrior wave for each time you pass the 6-minute period to take care of the re-spawns.

SIDE NOTE: If you do not have the high hero level necessary for the spearhead. You can probably send 94K archer/2K worker/2K warrior/2K ballistae for more firepower. 2K to 6K ballista should help strengthen the spearhead - but your HBR tech would be required preferably at 10. Using ballista will also now limit your distance and the NPC 10 must be close by.

SIDE NOTE: If you do not have a Rally Spot 10, you can probably send 6 additional waves of 5K suicide warriors before sending a spearhead OR you can also use a War Ensign which will increase the number of troops you can send for that one time to 115K. With 115K size limit, feel free to add 15k more archers to add firepower, or mix it up with ballista up to 6k, to the spearhead.

At the moment all 3 side notes I posted above are theoretical since I have not conquered a 10 with any of those limitations.

Options Used:

War horn (Ivory Horn) to help increase attack strength
Penicillin to help a little in healing troops (13% instead of normal 10%)

Preparation:

To avoid dealing with the full re-spawning of 40K warriors found in an NPC level 10, we use Camp Time to send the 40 attacks within a 6 minute window.

NOTE: NPC 10 regenerates right after a hit - the 6-minute window is when NPC 10 would've have completed re-spawning all wall defenses and all troops (resources are completely regenerated after 8 hours).

Every server maintenance, the server gets a random point of when the 6-minute period begins and ends. It does not start at 0:00 server time all the time. There are many ways to find out when the 6-minute period starts but I use Tax Rate in Town Hall since its easiest. All you need to do is set the tax rate of one of your city and wait to see when the loyalty drop/increase happen - that minute marks the start of a 6-minute period, wait for 6 minutes to confirm the end of the period and start of the next 6-minute period.

Now that you know the start of the 6-minute period, make note of each period for a whole hour so you know when re-spawning updates occur for all NPCs.

For example: I saw loyalty drop at 14:05 server time - so I have the following 6-minute period for September 6 -

xx:05 xx:11 xx:17 xx:23 xx:29 xx:35 xx:41 xx:47 xx:53 xx:59

where xx would be any hour for the day of September 6.

Here's the key technique:

When I send my first attacks, I send first from the farthest city - whether it is the loyalty waves or the spearheads - and I camp-time them to land:
a. a few seconds after the start of the 6-minute period for the spearheads
b. or near the end of the 6-minute period for the loyalty waves

NOTE: Knowing the 6-minute period increment allows you to prepare and send a larger/stronger troop size to defeat the re-spawns in case you mess up with camp time and a wave of troops would land after a 6-minute mark. Given the proper number of troops and troop composition, a good understanding of this 6-minute period will help conquer any NPC easily.

Troop Composition - What to Send:

Wave 1: SPEARHEAD 1 - Using your highest attack hero - 96K archers, 2K workers, 2K warriors

Wave 2: SPEARHEAD 2 - 100K warriors

Wave 3: SPEARHEAD 3 - 100K warriors - this is really optional - you can send 10K warriors - I just like to overcompensate and make sure the ATs, traps, warriors are gone or near gone and that from wave 3 onwards, you are simply defeating the re-spawns.

NOTE: All spearheads must be sent a few seconds of each other for maximum effect. Make sure Wave 1 hits first or else you will have 100% loss on the 100k warriors (Use Camp Time for Waves 2 and 3 to make sure).

Wave 4 to 40: LOYALTY WAVES - 10k warriors

The trick of being able to conquer an NPC 10 within 40 waves is the close timings of the loyalty waves to each other after the spearheads do its jobs. The barrage of attacks landing one after another brings public grievance up which in turn influences faster loyalty drops - so camp-time these loyalty waves as close to each other as possible.

Losses:

4K archers
2K workers
less than 50k warriors

Screenshots: