Welp, after i couple attempts i did the heroic one too, by drafting an absolutely insane combo.

Your leftmost card costs 2 less
Random 1 drop + "Has +4/+4 but costs 2 more" + "Always starts in your hand"
The Muscle + "Always starts in your hand"

Turn 1 6/5, turn 2 4/5 plus three random cards that cost 0.

I even got "your minions have +1/+1" in the end. Absolutely bonkers.
Also, in another run that ended badly, i had gotten "spells cost mana" with Antonidas for lethal.
Pretty fun