Hearthpwn

Firstly you must use Dire Frenzy on Young Dragonhawk, next use defensive cards to protect yourself until you draw 3 Young Dragonhawk +3/+3, or more and Tundra Rhino (26 damage). Vs control you can use Emeriss before combo for more damage. Don't use Stitched Tracker to copy 1/1 Young Dragonhawk, becouse this wouldn't fit your deck. Also be carefull with using Tracking, you dont want to discard combo-cards.

There is some cards to fit your deck:
-Mad Scientist
-Tracking

And draw:
-Acolyte of Pain
-Witchwood Piper
-Tol'vir Warden

Mulligan:
Keep Dire Frenzy, rest of the combo you can draw with other cards. Look for cheap cards. Mad Scientist can fit your deck, but you must have secrets in it, so i prefer not to have secrets in starting hand.