Best Deck to Beat Sapphiron in Heroic Mode in Frostwyrm Lair Curse of Naxxramas
Sapphiron’s hero ability in heroic mode is to destroy all of your non-frozen minions so you can’t play a deck with minions in it. This means that you have to play freeze mage and rely on burn and some specially summoned minions to kill Sapphiron in Heroic Mode. The deck list is shown below.
2x Arcane Missiles
2x Arcane Intellect
2x Frost Nova
2x Ice Barrier
2x Ice Block
2x Mirror Entity
2x Cone of Cold
2x Mad Scientist
2x Nerubian Egg
Best Strategy to Beat Sapphiron in Heroic Mode in Frostwyrm Lair Curse of Naxxramas
Play freeze mage against Sapphiron in heroic mode as you would normally playing the delaying tactics such as Frost Nova, Cone of Cold and Blizzard. Play the secrets, Ice Barrier and Ice Block whenever you can so you can survive or long enough. Play the Mad Scientist to get the other secrets that might help you summon minions.
Use Mirror Entity to do a little damage since you can copy one of Sapphiron’s minions after he has played his hero ability. The way to kill Sapphiron is to use your burn cards, such as Pyroblast and Fireball, which don’t quite do enough damage. Hence you have to use your minions whenever you can do do a little extra damage. The Nerubian Egg will also stay around since its 0/2 state will take the hero ability and then summon the 4/4.
Note that it might take a few tries to win the fight since you can rely on the burn cards showing up.