Best Deck to Beat Gluth in Heroic Mode in Naxxramas Construct Quarter
Gluth in heroic mode starts with a weapon that gets buffed whenever minions with deathrattle die. Therefore it is best to silence any minions Gluth plays that have deathrattle or to destroy his weapon and not to cast any deathrattle minions yourself. It is also important to stop the incoming damage. The recommended deck against Gluth in heroic mode is a modified version of freeze mage which includes silence minions, which is shown below.
2x Ice Lance
2x Acidic Swamp Ooze
2x Arcane Intellect
2x Frost Nova
2x Ice Barrier
2x Ice Block
2x Cone of Cold
2x Azure Drake
Best Strategy to Beat Gluth in Heroic Mode in Naxxramas Construct Quarter
Play Freeze Mage against Gluth in heroic mode as you would normally but use the silence minions to get rid of the deathrattle on Gluth’s minions. It will also be important that you get Acidic Swamp Ooze in your starting hand to get rid of Gluth’s weapon. Play the delaying tactics, like Frost Nova and Blizzard. On turn 9 play Alextraza to set Gluth to 15 health and kill Gluth in turn 10 using the burn cards.
Note that it might take a few attempts and a good starting hand to beat Gluth in heroic mode.