Battle Scars

This is my revised Battle Scars deck; it leans heavily into regeneration units.  A few pointers:

• In general, you want to mulligan for either Disciple/Starlit Seer/Curator, and either Transfusion or Elixir of Iron.   The idea is that you want to setup a combat trade, then use one of the tricks to save your unit WHILE generating value AND progressing Vlad.  Omen Hawk is often a good mulligan too because its Omen Hawk, and pretty much everything in this deck loves extra stats.
• The exception is if you're up against an aggro deck, as this deck doesn't come online until ~Round 5.  Ignore the tricks and just mulligan hard for any unit 3 mana or less--you need to stop the bleeding ASAP.  (This is part of the reason why I've adopted the Seers.) 
• You get value from having units on-board, so in general try to avoid any trades unless they are critical or strong value.
• If facing a P&Z deck, try not to tap out.  Even if you aren't necessarily holding an Elixir of Iron or Transfusion, you can bluff like you are.
• Your ideal target for Take Heart is anything with regeneration, but don't be afraid to use it else wise in a  pinch.  Getting it onto disciple right when he would otherwise die can be really good too.
• Whirling Death is your one get-of-jail trick; try to save it for something game-turning (e.g., interrupting a Judgement)
• Legion Veteran is the unsung hero of this deck.  He has obvious synergy with Vlad and Transfusion, but even just basic blocking can gain additional value thanks to him.  You almost always want to attack with him far-right to milk all the value you can.
• When attacking with Vlad, be VERY careful about your ordering and use the eye a lot.  Don't commit any more combat tricks than you need to.  You can get some very sneaky lethals--e.g., attacking in with a 1 HP unit that your opponent doesn't block because he thinks its going to die to Vlad's skill, then you buff it so it survives and deals full damage to nexus.

Good luck!