[Warframe Concept] Mephistopheles the Corrupted

[Malak-al-Maut]

Mephistopheles (or Mephisto) the Corrupted

While several warframes have certain abilities that benefit from corrupted mods, certain abilities such as Trinity's EV and Nova's Molecular Prime are completely changed when corrupted mods are used.  Mephisto would be the first 'frame that was designed specifically to be used with corrupted mods.  His powers would change dramatically depending on whether they were positive or negative.

Keeping with the Faust theme Mephisto's powers would reflect the demon's contract.

Life- Mephisto increases his own and team members life total but reduces their energy for the duration of the effect.  With less than 100% power strength the effect reverses giving a bonus to energy at the expense of health.  The benefits are kept after the effect duration expires so it can be used as a quick heal or power boost if power duration is minimized.  As an example, a power strength of 130% would boost Mephisto's health but reduce his energy.  Assume his health is at 200 out of 300 and energy is at 100 out of 150 before the ability is cast.  After casting Mephisto's health would increase to 260 out of 390 and his energy would be reduced to 70 out of 105.  When the effect expires he would have 260 out of 300 health and 70 out of 150 energy.

Wealth- This effect is based on efficiency.  The more energy it costs to cast increases the drop rate of items but decreases affinity gains.  Greater efficiency causes affinity to be increased but drop rates are decreased.  (The reason this ability is efficiency based is that it automatically caps the benefits or losses at the max efficiency of 175%.)

Fame- This effect is based on power range.  Enemies will specifically target the character this is cast on ignoring all other characters (there isn't a good mechanic in the game currently for tank players to pull threat away from other weaker players.)  The radius of the effect is based on power range.  Can be cast on enemies making other enemies attack them.  If power range is below 100% then enemies ignore the character this is cast on (reduced notice area similar to the Rakta Dark Dagger.)  Can be cast on rescue and defense targets if it's a person.  Can also be cast on enemies.  If ignore is cast on an enemy other enemies will not receive any positive buff from the ignored enemy.  Also, shield osprys would not shield and abandon them.

Ultimate - Possesion - Mephisto possesses an enemy.  His own body disappears as he visibly enters the possession target.  While possessed the player has complete control of the target and can move them around and fire their weapons.  Enemies will ignore a possessed target since it is their ally unless you attack them.  Possessed enemies can walk through lasers and cameras undetected (they're supposed to be there.)  The possession target's health slowly decreases (based on power duration) healing Mephisto for the amount drained.  Shields will also be drained increasing Mephisto's energy.  Very low power duration can be used to nearly instantly kill any non-boss enemy while healing Mephisto and allowing him to recast the ability quickly.  The possession may be cancelled at any time by pressing four again.  If an enemy has already attacked other enemies when the possession ends they will continue to attack each other.  Damage to the possession target does not damage Mephisto but does reduce the amount of time the target can be possessed.  Killing a possessed target will cause Mephisto to reappear in its place.