♾️Index God with 30 Mesmer Skin Charges & Infinite Duration of 150% Damage Buff to every weapon and melee you use, which can u share with your Team♾️
With Irrelevant Energy tactic you can cast any ability even with 0 Energy, if you're lucky you can cast 4 times any ability for free, cast 1 for standard energy cost and then another 4 for free, don't forget you gonna get more than 170 energy per energy orb and have massive energy regen

📕TLDR: Stats

• ⚡Free 4 Ability Uses, 3 once in a while and 1 guaranteed every minute
• 🔋Massive Energy Regen, can even nullify energy drain for short period of time
• 💪Free massive Ability Strength from 50% to even 205%
• 🔥Making your 300% Revenant into 503% Ability Strentgh Beast
• ♾️Immortal 30 Charges of Mesmer Skin and massive 150% Roar Damage Buff.

📕TLDR: For Irrelevant Energy

• Zenurik School gives you ⚡1 Free Ability Use⚡ every one minute.
• Arcane Steadfast gives you ⚡3 Free Ability Uses⚡ once in a while (20% chance)
• Arcane Energize gives you 🔋150 More Energy🔋 (60% chance) from 🌀Energy Orbs
• Arcane Energize combining with Zenurik School gives you more than 170 energy from 🌀Energy Orbs per Orb almost every 15s with every pickup and massive short passive Energy Regeneration
  (if you have less than a couple of points, also this short massive energy [Regen] can nullify energy drain from carrying to much points, that's how massive this energy regeneration is)

📕TLDR: For Irrelevant Strength

• Change [Mesmer Shield] mod to Energy Conversion mod to have free 50% Ability Strength every time you pick up 🌀Energy Orb from dispensers on Index Maps.
• Change your (1) (3) or (4) Ability to Empowered from Helminth to have INSTANT 50% Ability Strength for your Mesmer Skin, giviing you astonishing 💪100% bonus AS.
• Change any Arcane to Molt Agument or Molt [Vigor] to have additional bonus 💪45% or 60% Ability Strength. Instead of Empowered you can use this Arcanes to have Roar or other abilities withoout loosing your 💪50% free AS bonus.
  ========= ========= ========= ========= ========= ========= 📝End of Tldr📝 ========= ========= ========= ========= ========= =========

📜You gonna survive with (2) Mesmer Skin ability alone (18 or more Charges).
If u need to recharge, use Rolling Guard mod standing near energy orb and press your (2).
Granting you basic immortality.
You can easily survive 3-4 Rounds of Index with this if you're lazy, anything above it is managable as long as you're skilled enough with good weapons.

🧠Abilities worth mention:

• Roar (from Rhino) - Boost Ability Damage, Weapon Damage and Melee Damage (high energy use, longer time duration)
• Eclipse (from Mirage) - Boost Weapon Damage and Melee Damage (low energy use, shorter time duration, damage is very random)
• Pillage (from Hildryn) - Weak Enemies and make them easier to kill (you need to be close to enemies cause of short range) (you can change Mesmer Shield to Archon Stretch to help it a little)

💡Arcanes worth mention - 🔋For Energy:

• Arcane Energize
• Arcane Steadfast

💡Arcanes worth mention - 🔥For Strength:

• Arcane Molt Augmented
• Arcane Molt Vigor

⚡For Energy Managing:

• You can use Zenurik School giving you 1 free ability use every 1 minute + More Energy when picking Energy Orbs + Free Energy Regen.
  (If you starting the game or have less then 5-10 points)

♻️Mods worth mention:

• [Energy Conversion] instead of [Mesmer Shield] for more Strength

📜This is Superior Strategy because you gonna pick up ⚡Energy Orbs every time you gonna recharge your ♾️Immortality.
Granting you free 💪50% Ability Stregth for any Ability you gonna use next, making your 💪300% Ability Strength to 350%
Combine it with 💡Steadfast Arcane, you can choose which ability gonna have this bonus 💪50% Strength, it can be your Mesmer Skin, [Rhino] Roar or anything you like.
With 💡Steadfast Arcane you can cast to 3 times any ability even with ⚡0 Energy left, if you're lucky even more, Energy Orbs gonna give you 💪Strength Bonus or/and a moment to cast heavy energy abilities (combining with 💡Arcane Energize)

========= ========= ========= ========= ========= ========= 💡ARCANE TALK💡 ========= ========= ========= ========= ========= =========
💪For Strength Managing:
You change one of the two Arcanes (Energize / Steadfast) to Molt Agumented or Molt Vigor.

💡- For Molt Agmented you need to kill 250 enemies to have free permament 60% Ability Strength.
If you gonna play Solo you will kill around 70 enemies per round (giving you 0.24*70=16.8% Strength Bonus)
You need to play at least 3 (and a half) rounds to have 250 kills and max 60% Ability Strength.
I recommend this Arcane if you want to play at least more than 3 Rounds on Index. (3 Rounds = At least 210 kills giving u 50,4% Ability Strength)
I pretty much recommend this Arcane only for lazy players but with enough fire power to be able to kill enemies fast enough above 4 Rounds of Index.

📜I advice you to NOT use this Arcane if you're gonna play less than 3 rounds of Index.
Even if you're a little lazy you gonna have only 33.6% Buff after 2 Rounds.
If you want free ⚡INSTANT⚡ Ability Strength Bonus and don't need other powers, use Helminth Empower with 💪[Energy Conversion] to have astonishing 100% Ability Strength Bonus.
This gonna give you 24 Mesmer Skin Charges making you even more immortal.

💡- For Molt Vigor you need to use any Operator Ability to have free 45% Ability Strength ⚡INSTANTLY⚡ - but you need to do it every time BEFORE you use your Warframe Ability.
I recommend this Arcane if you want to play casually 1-3 Rounds of Index to have instant Ability Strength Buff.
I pretty much recommend this Arcane only for skilled and careful players who doesn't mind to click a couple of buttons more while playing - You need to be active player to pull this off.

📜I advice you to NOT use this Arcane if you're forgetful.
Using this Arcane to get instant buff is worth only if you gonna change keybinds of operator to something more comfortable to you.
Take your time and master fast casting Operator Abilities.
If you're skilled enough you can do it in less than 1.5 seconds (without casting Warframe abilities), so this Arcane is pretty powerful in the 1-3 Index Rounds.
========= ========= ========= ========= ========= ========= 💡ARCANE TALK💡 ========= ========= ========= ========= ========= =========