Troll or Not, Susan has always had 3 Faces: Godly Top lane Nasus, a hybrid Ap Nasus with Stocks of Top, but Support Nasus wasn't even been considered by Pros. This is a complete 180 of playing this Godly champ. Playing Susan support is more like playing Teemo, but instead of damage you are Slowing and Tanking, and are super annoying.

Pros:
+Insane early presure+
+Tanky late+
+Slows, that works like Morgana Q+
+Really early completed Boots give power spike+
+Giving your team gold lead, by reducing enemy armor+
+Good zoning+
+Mental damage for the enemy team+

Cons:
-No damage late-
-Requires Team play/Good coordination-
-Squishy till late-
-Useless on cooldowns, unless you run PTA-
-No High Stonks, so no One-Shot Qs-
-Requires brains to work-
-Easily bullied, if misplays, since normal support are better even, if they don't do Dog S**t-

Everybody knows them, but here is a rundown

Soul Eater
INNATE: Nasus permanently has Life steal 12 / 18 / 24% (based on level) bonus life steal.

Siphoning Strike CAST TIME: NONECOST: 20 MANACOOLDOWN: 8 / 7 / 6 / 5 / 4
ACTIVE: Nasus' next basic attack within 10 seconds becomes Excessive Force 2.png unstoppable, gains Range icon.png 25 bonus range and deals bonus physical damage.

BONUS PHYSICAL DAMAGE:
30 / 50 / 70 / 90 / 110 (+ Siphoning Strike stacks)

If Siphoning Strike kills its target, Nasus permanently gains 3 stacks, increased to 12 if its target is a Champion champion, large Minion minion, or large Monster icon.png monster.

Siphoning Strike resets Nasus' basic attack timer.

Wither TARGET RANGE: 700 CAST TIME: 0.25COST: 80 MANA COOLDOWN: 15 / 14 / 13 / 12 / 11

ACTIVE: Nasus ages the target enemy champion for 5 seconds, Slow slowing them by 35% and Cripple crippling them by half that amount , both increasing over the duration.

ADDITIONAL SLOW PER SECOND:
3 / 6 / 9 / 12 / 15%

ADDITIONAL CRIPPLE PER SECOND:
1.5 / 3 / 4.5 / 6 / 7.5%

Spirit Fire TARGET RANGE: 650 EFFECT RADIUS: 400 CAST TIME: 0.25
COST: 70 / 85 / 100 / 115 / 130 MANACOOLDOWN: 12

ACTIVE: Nasus unleashes a spirit flame at the target location, dealing magic damage to enemies in the area.

The flame then remains for 5 seconds, dealing magic damage each second to all enemies within and Armor penetration icon.png reducing their armor while they remain, lingering for 1 second.
MAGIC DAMAGE:
55 / 95 / 135 / 175 / 215 (+ 60% AP)
TOTAL MAGIC DAMAGE:
110 / 190 / 270 / 350 / 430 (+ 120% AP)
ARMOR REDUCTION:
25 / 30 / 35 / 40 / 45% of target's armor

Fury of the Sands EFFECT RADIUS: 350 CAST TIME: 0.2 COST: 100 MANA COOLDOWN: 120
ACTIVE: Nasus empowers himself for 15 seconds, gaining Health bonus health, Armor bonus armor, Magic resistance bonus magic resistance, 30% increased size, and Range 50 bonus attack range for the duration.

While Nasus is empowered, he deals magic damage to nearby enemies each second, capped at 240 per second, and Siphoning Strike's Siphoning Strike's Cooldown reduction cooldown is halved.

BONUS HEALTH:
300 / 450 / 600

BONUS RESISTANCES:
40 / 55 / 70

TOTAL MAGIC DAMAGE:
45 / 60 / 75% (+ 15% per 100 AP) of target's maximum health

Picking him is half job done, when playing agains tanky team comps. And if, your team have Vayne, that know how to play her champ, ez win, ez LP.
Also he's great picking when your team has low AP, and high AD, since Armor reduction on his E will help AD champs, clean up better, while maintaining balance between AD and AP.

Maxing E first gives you presure early, with increasing damage You can poke and zone lane opponents from CS and Armor Reduction helping your ADC to harass and all-in better.
Maxing W second? Isn't CC (slow) more importaint?
Well, no. If you have Exhaust, you have enough to peel your AD Carry and Catch enemies.
Q is almost useless to helping Susan.

You're a very unstable Champion.
You go frontline in Lane, since AD bois are not tanks. In early team fights or skirmishes, you eigher Stay in backline for poke and catching fishies, or catch who is running away and let your team handle them for free gold.
In mid game your job is the same, but you move from backline to in between Back and Front, as you get tankier, ideally or at least in theory, but in reality, your actual job is to keep Assasins away from the backline.
Late game is your time to shine. "But what can I do? I have only around 100 Q stack, I can't one shot then". No worries. This is where you'll be anoying as hell. If you have already Abyssal Mask, this is your late game. So go out there and be anoying with your Ult+E+Rylai's CrystalScepter+url=https://leagueoflegends.fandom.com/wiki/Abyssal_Mask]Abyssal Mask[/url]. But, there are always "BUTs", don't forget to Guard the backline and don't be caught in CC.

Well Flash+W is flashy.
But your bread and butter is W+E.
You can make things spicier with Exhaust and Ult.
Spam your Q to bring enemies down to low health, so you can table spon feed your caries, you can steal One or Two kill, when your caries are fed.
End of combos.

Unlike your counter-part in Top, Helping Susan thrives in early game. Poke your lane opponents with E, you can even do W+E and that your AD carry trades or poke in your E, but watch your mana. When your half mana, save some for collapsing and only use mana for Q on Cannon minions.
DON'T STEAL KILLS, unless you meet two conditions: 1. If you don't, your AD carry dies. 2. Or Ad carry can't take them.
(Later in game after, if your team is more or less fed, Steal like your life depends on it, GET YOUR AHEAD aswell)

If you manage to stack independently, that is great.
But You want to use Relic Shield only on Cannon minions. It give more stacks. Unlike normal minions (casters and melee), who'll deplete your Relic Shield fast and give low number of stacks.

My final thoughts:
Nasus support (a.k.a. Helpnig Susan) is a great niche pick and a strong one aswell. Never underestimate it.
But going solo in SoloQ with this is madness. On the other hand, having ADC Main by your side make that Bottom lane snowball.

Good luck, Summoner.

And see you on the rift.

I'm just a guy who likes off-meta supports.

If you want to have a talk with me about this guide:

BOOM!#4471