I have found a bug, maybe it is because of my silverfish setting.
I had Boulderfist ogre 6/7 with taunt, and my opponent had 4/2 and 3/5 cards on board. Holy Smite was ONLY card on my hand but bot didn't used holy smite
to that 4/2 card even when i had enough mana crystals and kept it to my hand until next round. Next round when my Ogre was gone then bot casted Holy Smite to the face of opponent, it would be alot better for my ogre to face the opponent with 6 hit and bot would cast Holy Smite to that 4/2 card.
Enemy had only 12 HP and I would won that game if bot didn't done that bug, sorry my english.

PS: I used only settings.txt without combo or mulligan.

here's my setting:

enfacehp = 15; // hp of enemy when your hero is allowed to attack the enemy face with his weapon
maxwide = 15000; // numer of boards which are taken to the next deep-lvl
twotsamount = 3000; // number of boards where the next turn is simulated
simEnemySecondTurn = true; // if he simulates the next players-turn, he also simulates the enemys respons
playarround = true; //play around some enemys aoe-spells?
playaroundprob = 50; //probability where the enemy plays the aoe-spell, but your minions will not die through it
playaroundprob2 = 80; // probability where the enemy plays the aoe-spell, and your minions can die!
enemyTurnMaxWide = 60; // bords calculated in enemys-first-turn in first AI step (lower than enemySecondTurnMaxWide)
enemyTurnMaxWideSecondTime = 600; // bords calculated in enemys-first-turn BUT in the second AI step (higher than enemyTurnMaxWide)
enemySecondTurnMaxWide = 60; // number of enemy-board calculated in enemys second TURN
nextTurnDeep = 6; //maximum combo-deep in your second turn (dont change this!)
nextTurnMaxWide = 60; //maximum boards calculated in one second-turn-"combo-step"
nextTurnTotalBoards = 600;//maximum boards calculated in second turn simulation
useSecretsPlayArround = true; // playing arround enemys secrets
alpha = 50; // weight of the second turn in calculation (0<= alpha <= 100)
simulatePlacement = false; // set this true, and ai will simulate all placements, whether you have a alpha/flametongue/argus
useExternalProcess = true; // use silver.exe for calculations a lot faster than turning it off (true = recomended)
passiveWaiting = false; // process will wait passive for silver.exe to finish
behave = rush; // select the behavoir of the ai: control, rush, face (new) or mana (very experimental, dont use that :D)
concedeOnBadBoard = true; // set this to true and ai will concede if enemy is to good
speed = true; //set this to true, to support sending multiple actions to bot