Hello there,

As per Wiki:

• Tenet Cycron: Beam can chain to multiple enemies..
• The weapon's max rank caps at 40 after 5 polarizations - max rank increases by 2 per Forma added (similarly as the Paracesis).
• All Tenet weapons deal innate elemental damage in addition to physical damage. The amount of this damage is random, ranging from 25-60%, while the type of element is determined by the Progenitor Warframe, as per the table below:

According to the above, I added exactly 5 forma to this weapon, so we can obtain Mastery Points from it.

In this case, I recommend picking Magnetic as an elemental.

Here are some facts about the weapon:

• Pinpoint accuracy.
• Innate 1 meter punch through.
• Beam can chain up to 2 nearby enemies within 7 meters from the initial target.
• Enemy corpses will still allow the beam to connect to nearby enemies.
• Does not use ammo pickups; ammo regenerates over time.
• Has a 1-second delay after the weapon stops firing before regenerating ammo. Then, regenerates 40 ammo per second; takes 1 second to regenerate a fully depleted battery, excluding the delay.
• Damage ramps up from 30% to 100% over 0.6 seconds when firing. After firing stops for 0.8 seconds, the damage decays back to 30% over 2 seconds.
• Limited range of 28 meters.

So what I did here, I created "A Corpus version of [Kuva Nukor]", that means a very good weapon for index, for large groups of enemies, and because of chosen elementals this weapon is kinda universal against both Corpus and Grineer.
[Ruinous Extension] add +8 meters to the beam, so we got 36 meters range.

Enjoy, THeMooN85