I watch Kripparrian's method in slaying Sapphiron, https://www.youtube.com/watch?v=JhYK1tdIJ5E. He played it really simple, just counter whatever Sapphiron throws. This deck is inspired by Kripp's deck. There are certain cards that Kripp uses but I don't have it. In his run he uses fairly cheap cards as well. I don't have cards like Cone of Cold, Arcane Golem, Counterspell, and an additional Blizzard. So yes.. I make do with other stuffs that I have.
Note that what Heroic Sapphiron actually have,
- 3x Mana Wyrm
- 3x Faerie Dragon
- 2x Frostbolt
- 3x Loot Hoarder
- 2x Dancing Swords
- 3x Shade of Naxxramas
- 2x Skeletal Smith
- 3x Necroknight
- 2x Azure Drake
- 2x Pure Cold
- 3x Spectral Knight
- 2x Blizzard
2x Haunted Creeper - Sticky monsters that going to deal 2x 1 damage for the next turn.
2x Mad Scientist - Getting your secrets out fast.
2x Mirror Entity - Since this secret is triggered after drops a minion, you will get a minion that is allowed to attack for one turn. Normally this minion should have 4 attacks which can take down Azure Drake or Dancing Swords.
2x Vaporize - The only few cards to counter the almighty Spectral Knight. You should normally plays that right after Sapphiron drops a Spectral Knight. If your Mad Scientist somehow set that up way too early, make sure it's not being triggered too early.
2x Flamestrike - The ultimate board clearer.
The most dangerous minions Sapphiron drops is without a doubt, Spectral Knight. With 6 hp, they can survive a Flamestrike and they are immune to your hero power and spells. The only way to deal with them are, Vaporize and collateral damage from your AoE spells or Necroknight. But once you kill all 3 of them the rest of his minions are real easy to counter.
You should mulligan for your 2 mana spells or blue-gill. There's a huge chance that Sapphiron will coin out a Faerie Dragon. Do take note of the last Faerie Dragon and make sure it dies your AoE spells as well.
Shade of Naxxramas is a minion that must be dealt with as soon as possible because of their ability.
This deck requires a bit of luck for drawing the right card at the right turn. I manage to beat Heroic Sapphiron with this deck the 2nd try so it should do fine.