Can any good drop be found at those 10 boss fights??

Item Class: Misc Map Items
Rarity: Rare
Eternity Passage
Maven's Invitation: Valdo's Rest
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Item Quantity: +71% (augmented)
Item Rarity: +42% (augmented)
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Item Level: 83
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Players are Cursed with Temporal Chains, with 60% increased Effect
Monsters deal 105% extra Physical Damage as Lightning
Unique Boss deals 25% increased Damage
Unique Boss has 30% increased Attack and Cast Speed
Monsters gain an Endurance Charge on Hit
Monsters gain a Frenzy Charge on Hit
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For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
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Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Class: Misc Map Items
Rarity: Rare
Havoc Call
Maven's Invitation: The Twisted
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Item Quantity: +58% (augmented)
Item Rarity: +34% (augmented)
The Maven must Witness:
The Purifier,
The Constrictor,
The Enslaver,
The Eradicator
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Item Level: 83
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25% increased Monster Movement Speed
42% increased Monster Attack Speed
43% increased Monster Cast Speed
Unique Boss deals 25% increased Damage
Unique Boss has 30% increased Attack and Cast Speed
Unique Boss has 35% increased Life
Unique Boss has 70% increased Area of Effect
Monsters take 38% reduced Extra Damage from Critical Strikes
--------
For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
--------
Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Class: Misc Map Items
Rarity: Rare
Havoc Duty
Maven's Invitation: Lira Arthain
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Item Quantity: +68% (augmented)
Item Rarity: +41% (augmented)
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Item Level: 83
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Players are Cursed with Elemental Weakness, with 60% increased Effect
+40% Monster Physical Damage Reduction
Monsters deal 92% extra Physical Damage as Lightning
Monsters have 50% increased Accuracy Rating
Player chance to Dodge is Unlucky
Players have 25% less Area of Effect
--------
For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
--------
Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Class: Misc Map Items
Rarity: Rare
Oblivion Call
Maven's Invitation: Lira Arthain
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Item Quantity: +39% (augmented)
Item Rarity: +23% (augmented)
--------
Item Level: 83
--------
Unique Boss deals 25% increased Damage
Unique Boss has 30% increased Attack and Cast Speed
Monsters gain an Endurance Charge on Hit
Monsters have a 50% chance to avoid Poison, Blind, and Bleeding
--------
For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
--------
Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Class: Misc Map Items
Rarity: Rare
Eternity Passage
Maven's Invitation: Glennach Cairns
--------
Item Quantity: +52% (augmented)
Item Rarity: +31% (augmented)
--------
Item Level: 83
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Monsters Poison on Hit
Unique Boss has 35% increased Life
Unique Boss has 70% increased Area of Effect
Monsters have a 50% chance to avoid Poison, Blind, and Bleeding
60% less effect of Curses on Monsters
--------
For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
--------
Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Class: Misc Map Items
Rarity: Rare
Fate Offer
Maven's Invitation: New Vastir
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Item Quantity: +64% (augmented)
Item Rarity: +37% (augmented)
--------
Item Level: 83
--------
23% increased Monster Damage
+40% Monster Physical Damage Reduction
Monsters Poison on Hit
Monsters deal 99% extra Physical Damage as Cold
--------
For those who must not endure it,
there may be found a perverse joy
in watching the struggle for survival.
--------
Can be used in a personal Map Device. Modifiers to Item Quantity will affect the number of encounter rewards dropped.

Item Quantity: +33% (augmented)
Item Rarity: +20% (augmented)
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Monsters gain a Power Charge on Hit
Monsters cannot be Taunted
Monsters' Action Speed cannot be modified to below base value
Players have Point Blank

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Item Quantity: +49% (augmented)
Item Rarity: +29% (augmented)
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Area has patches of Burning Ground
Monsters are Hexproof
Unique Boss has 35% increased Life
Unique Boss has 70% increased Area of Effect
Monsters have a 50% chance to avoid Poison, Blind, and Bleeding