Hello Tenno,
Let's all use our ultimate and cast a spell on senor Pablo to make him rework/update our beloved Loki to ... let's say 2024 Warframe standards :D
Here are my thoughts in regards of his skills.
Passive Ability: Elusive Shadow
Loki is naturally adept at remaining unseen, granting him increased movement (parkour) speed by 25% and attack speed by 30% while using daggers. Additionally, he has a chance to evade enemy attacks (50% evasion rate for ranged and melee attacks)
Note: (Percentage of these buffs are subject to balance)
Skill 1: Decoy Distraction
Loki deploys a holographic decoy that mimics his appearance and movements, drawing enemy attention away from Loki himself.
The decoy emits periodic bursts of energy that disorient nearby enemies, causing them to briefly lose track of their target. The decoy draws and store enemy fire and can be detonated remotely, causing it to explode in a burst of blinding light, stunning nearby enemies.
The explosion armour strip enemies that have armour or remove shields for enemies that have shield
Note: Armor and shield strip percentage is based on Power strength while the radius of explosion is based on Ability range
Skill 2: Umbral Veil
Loki cloaks himself in shadows, becoming invisible to enemies for a duration. While invisible, Loki gains increased movement speed and bonus damage for his melee attacks (daggers only).
Note: Invisibility duration is based on Ability duration while movement speed and bonus damage is based on Power strength
Skill 3: Trickster's Gambit
Loki unleashes a wave of confusion that disorients enemies in the area, causing them to briefly lose track of their allies and objectives. Affected enemies may accidentally attack their own allies or wander aimlessly for a short duration. Additionally, Loki gains increased critical hit chance against confused enemies.
Note: Loki gains 25% critical chance per confused enemy - (Percentage of this buff is subject to balance)
Disorientation debuff and critical chance buff duration is based on Ability duration
Disorientation area of debuff is based on Ability range
Ultimate: Laevateinn (Wand of Destruction)
Loki gain access to the power of an exalted dagger.
Note: The exalted dagger applies slash and radiation status effects with 100% chance.
The dagger can be modded similar to Excalibur exalted blade.
The skill drains energy upon activation. The energy drain can be lowered by Ability efficiency mods
While designing these new skills i kept in mind his historical original design but also his in-game (Warframe) existing abilities and status so that the "new" Loki wont be confusing to new and old players.
Thank you for your time and all the best