Kuva Lich/Rewards

Progenitor Warframe
The Warframe that created the Kuva Lich will determine the elemental damage bonus the Kuva Lich weapon will have, as well as the type of Ephemera should they spawn with one.

Kuva Weapons
These weapons are carried by a player's Lich and can be acquired once the Lich is killed. If the player has enough weapon slots, they can claim these weapons from their Foundry. The weapons vary in attributes, dependent on the Lich the player has slain. Kuva Liches are guaranteed to have a different weapon than its immediate predecessor, preventing players from generating Liches with two of the same weapon in a row. The Energy Color on the weapon is depicted by what elemental bonus was augmented on the weapon during lich creation and the progenitor Warframe.

Mechanics
A Kuva variant of a weapon will only provide mastery points once, a second weapon of the same variant but with a different Lich name will not provide extra mastery. These weapons have a max rank of 40. To obtain the maximum rank, the player must polarize the weapon five times, with each Forma increasing the maximum possible rank by 2 (similar to ). The weapon's base damage is based on the Kuva Lich's percentage of bonus damage.

All Kuva weapons deal innate elemental damage in addition to physical damage. The amount of this damage is random, ranging from 25-60% of the Kuva weapon's base damage, while the type of element is determined by the Progenitor Warframe, as per the table above.

Valence Fusion
A feature unique to Kuva Lich weapons. Players can upgrade and replace a Kuva weapon’s innate damage bonus with one from another Kuva weapon. This process destroys the donor weapon and overrides the host Kuva weapon's element while retaining any applied Formas, Orokin Catalyst, Focus Lens, Mod configurations, Appearance configuration, Lich name, etc.

For example, A has 25%  bonus and a Catalyst installed, while Kuva Seer B has 43% bonus. Fusing B to A will override the from A with the  buff from B, while A will retain the installed Catalyst, and B will be destroyed. The % bonus will be the highest of the 2 weapons multiplied by 1.1 and rounded to the nearest whole number, which would make the final bonus 47%.

Valence Fusion can be accessed in the Action tab at the bottom of the Upgrade screen of the desired Kuva Weapon.

Ephemera
Kuva Liches have a 20% chance to be created with an Ephemera equipped that corresponds to the Progenitor Warframe that killed them. These Ephemeras can be equipped on Companions. Kuva liches spawned without an ephemera have a small percentage chance to gain their ephemeras after a failed kill attempt.