Quickening is a mod that increases the attack speed of melee weapons while granting a chance of additional combo count per hit.

Stats[]

Rank	Attack speed	Combo count chance	Cost
0	+10%	+5%	6
1	+20%	+10%	7
2	+30%	+15%	8
3	+40%	+20%	9

Drop Locations[]

Mission Type	Source	Rotations or Drop Table	Chance^[1]	Quantity^[2]	Avg. per roll^[3]	Star Chart Nodes
Defection	Tier 1 Defection	C	15%	1	0.15	Memphis, Phobos
Defense	Dark Sector Defense	C	0.4%	1	0.004	Coba, Earth Romula, Venus Kadesh, Mars Seimeni, Ceres Sinai, Jupiter Larzac, Europa Sangeru, Sedna Akkad, Eris Sechura, Pluto
Defense	Dark Sector Defense	B	0.67%	1	0.0067	Coba, Earth Romula, Venus Kadesh, Mars Seimeni, Ceres Sinai, Jupiter Larzac, Europa Sangeru, Sedna Akkad, Eris Sechura, Pluto
Survival	Tier 2 Dark Sector Survival	C	11.28%	1	0.1128	Wahiba, Mars Zeugma, Phobos Cameria, Jupiter Piscinas, Saturn
Survival	Tier 1 Dark Sector Survival	C	11.28%	1	0.1128	Malva, Venus Gabii, Ceres
The Circuit	Tier 4 The Circuit (Normal)	A	1.49%	1	0.0149	Accessed through Duviri's The Circuit gamemode
The Circuit	Tier 6 The Circuit (Normal)	A	1.03%	1	0.0103	Accessed through Duviri's The Circuit gamemode

Enemy	Drop Table Chance^[4]	Item Chance^[5]	Chance^[6]	Expected Kills^[7]	Quantity^[8]	Avg. per roll attempt^[9]

Unlike most mods, the picture shows an Excalibur wearing the Pendragon helmet, his Immortal Skin, as well as a different color scheme. This is a rare instance of a mod depicting a non-default character loadout. The other examples are Life Strike, Second Wind, True Punishment, Enduring Strike, Warrior's Grip, Killing Blow and Corrupt Charge, all of which used to be channeling mods. Coincidentally, all of said mods depict Excalibur wielding a Nikana. The only difference in each appearance (besides positioning) is the energy color used.
As of Update 15.5 (2014-11-27), there are four new mods that also depict non-default characters. These mods are Bore, Piercing Caliber, Breach Loader, and Auger Strike, all of which depict a Nyx Warframe with her Immortal Skin and Menticide helmet.
Prior to Update 26.0 (2019-10-31), this mod provided bonus attack speed upon Channeling while reducing Channeling Efficiency.

Old appearance

Update 26.0 (2019-10-31)

Grants +40% Attack Speed, +20% Combo Count Chance (previously +20% Attack Speed, -80% Channeling Efficiency).

Update 13.0 (2014-04-09)

Damage

Base	Condition Overload • ( Primed, Sacrificial) Pressure Point • Spoiled Strike

Physical	Auger Strike • Buzz Kill • Carnis Mandible • Collision Force • ( Primed) Heavy Trauma • Jagged Edge • Jugulus Barbs • Rending Strike • Saxum Thorax • Sundering Strike

Elemental	Fever Strike ( Primed) • Focus Energy • Molten Impact • North Wind • Proton Snap • Shocking Touch • Vicious Frost • Virulent Scourge • Volcanic Edge • Voltaic Strike

Faction Bonus	Sacrificial Pressure • Sacrificial Steel • Smite Corpus ( Primed) • Smite Orokin ( Primed) • Smite Grineer ( Primed) • Smite Infested ( Primed) • Smite The Murmur

Other	Covert Lethality • Energy Channel • Finishing Touch • Seismic Wave

Critical Hits

Chance	Blood Rush • Maiming Strike • ( Sacrificial) True Steel

Multiplier	Gladiator Might • ( Amalgam) Organ Shatter • Strain Infection

Status

Heavy Attack

Attack Speed

Combo

Range

Thrown Melee
(Glaives)

Misc

↑ Chance to roll item within drop table
↑ Amount rewarded on successful roll
↑ (Quantity × Chance)
↑ Chance to roll drop table
↑ Chance to roll item within drop table
↑ (Drop Table Chance × Item Chance)
↑ (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
↑ Amount rewarded on successful roll
↑ (Quantity × Chance), average item quantity on a roll attempt (successful or not)