Thronebreaker - Easy Gernichora Boss Fight - Main Trinkets (10 Turn) Walkthrough below video.

Important Trinkets & Unit & Trophy
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*Northern Wind :Damage all damaged enemies by 4. Then, damage all enemies by 2.
*Zoria Runstone :Damage all enemies by 3.
*Meve - Rivian Broadsword :Damage enemy with same power by 4.

Sub Card
Lyrian Blacksmith :Play a Trinket from your graveyard (Reuse your trinket)
Wolfsbane :Draw 2 units and set their power to 1. (In case you don't have card in hand )

Important Note :
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1) Don't include too much Unit Card in your desk !
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Update 2 : For more easy understand, this boss fight is like use mathematic, have to decrease the value {HP} of enemy , step by step, can't over decrease in a round.

Walkthrough:
Turn 1 : 0
T2 : 0
T3 : Leader card - Rivian Broadsword , (-4) Leeches
T4 : 0
T5 : 0
T6 : Trinkets - Zoria Runstone , (-3) All enemy
T7 : Trinkets - Northern Wind , (-4) Boss , (2) Leeches
T8 : 0
T9 : 0
T10 : Lyrian Blacksmith - (Northern Wind) , (-4) Boss , (-2) Leeches.

For turn that deal 0 damage, play any non attack card. Such as, Blacksmith - Wolfsbane, To get more card in hand that need in 0 damage turn.

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About the Game :
Thronebreaker is a single player role-playing game set in the world of The Witcher that combines narrative-driven exploration with unique puzzles and card battle mechanics.
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Game details
Genre: Role-playing - Strategy - Fantasy
Works on: Windows (7, 8, 10)
Released: October 23, 2018
Company: CD PROJEKT RED