Riven Sliver: Drop sources, locations, and probabilities

Missions with a Chance to Get Riven Sliver as a Reward

Planet / Mission	Type	Rotation	Quantity	Probability
Saturn / Nodo Gap	Skirmish		2	5.50
Saturn / Vand Cluster	Skirmish		2	5.50
Saturn / Mordo Cluster	Skirmish		2	5.50
Saturn / Kasio's Rest	Skirmish		2	5.50
Saturn / Lupal Pass	Skirmish		2	5.50
Veil / Flexa	Skirmish		3	5.00
Veil / H-2 Cloud	Skirmish		3	5.00
Veil / Nsu Grid	Skirmish		3	5.00
Veil / R-9 Cloud	Skirmish		3	5.00
Duviri / Endless: Tier 4	Hard		3	4.43
Duviri / Endless: Tier 1	Hard		3	4.43
Duviri / Endless: Tier 3	Hard		3	4.43
Veil / Sabmir Cloud	Skirmish	A	2	3.33
Pluto / Peregrine Axis	Skirmish	A	2	3.33
Venus / Orvin-Haarc	Skirmish	A	1	3.33
Neptune / Brom Cluster	Skirmish	A	1	3.33
Pluto / Obol Crossing	Skirmish	B	1	3.03
Pluto / Fenton's Field	Skirmish	B	1	3.03
Veil / Arc Silver	Skirmish	B	3	2.86
Neptune / Enkidu Ice Drifts	Skirmish	B	1	2.86
Veil / Lu-Yan	Skirmish	B	3	2.86
Veil / Arc Silver	Skirmish	C	3	2.86
Pluto / Obol Crossing	Skirmish	C	2	2.44
Neptune / Arva Vector	Skirmish	B	1	2.33
Neptune / Arva Vector	Skirmish	C	2	2.13
Pluto / Fenton's Field	Skirmish	C	2	2.08
Veil / Lu-Yan	Skirmish	C	3	2.08
Neptune / Enkidu Ice Drifts	Skirmish	C	2	2.08
Veil / Numina	Skirmish		2	1.20
Veil / Calabash	Skirmish		3	1.20
Neptune / Sovereign Grasp	Skirmish		1	1.20
Neptune / Nu-Gua Mines	Skirmish		2	1.20
Pluto / Profit Margin	Skirmish		2	1.20
Pluto / Seven Sirens	Skirmish		2	1.20
Earth / Korm's Belt	Skirmish		2	1.00
Earth / Ogal Cluster	Skirmish		2	1.00
Earth / Iota Temple	Skirmish		2	1.00
Earth / Sover Strait	Skirmish		2	1.00
Earth / Bendar Cluster	Skirmish		2	1.00

Ennemy	Probability
Eximus Enemy (Hard Mode)	2%

Other items:
Pistol Riven Mod - Rifle Riven Mod - Zaw Riven Mod
Kitgun Riven Mod - Shotgun Riven Mod - Melee Riven Mod