Butcher like Zeratul is a gank hero, this mean you need to gank someone in another lane to get their meat and any minion meat that is there at the time.
But unfortunately in QM no one lanes so you are forced to if you want exp meaning you will get your meat at lot later than usual while your team blame you for not having enough meat because they made you lane.
Here are the talents i usually go.
Level 1:
all are good depending on the enemy comp/map
Block: Slow , but heavy AA (Leoric or Raynor)
Chop meat: if the map calls for waveclear (Braxis , Tomb)
Invigoration: if you don’t need the other 2 and the enemy has a big frontline (Muradin, Diablo)
Level 4:
I basically always go Unrelenting Pursuit
Ruthless onslaught is your Best ability and having the cooldown reduced by 1/3 of the time is an amazing pick.
Level 7:
90% of the time you should go Insatiable Blade because after the charge Butcher has no good means of chase.
5% of the time go Meat Shield because the enemy team might have 2 burst mages that you cant really go in on with out taking a ton of damage (KT, KTZ)
And the other 5% is for Victuals when your team makes you lane but you have no healer
Level 10:
Basically always go Lamb to the Slaughter, a 3 second silence plus an escape denial. also try to use this as either an opener for a teamfight or a gank on someone with high mobility (genji, tracer)
I guess you can go Furnace Blast of the enemy has blinds But not much else i would use it for.
Level 13:
Brutal Strike is great because it increase you already amazing AA damage, and Butcher is an AA hero meaning this will only make him better expect against blinds.
Savage Charge i would tank if the enemy has a really Tanky team
And basically never take Cleaver unless you NEED the wave clear
Level 16:
Only take Enraged it is way to good to pass up
Increase AA speed and Gain armor is amazing.
I would highly recommend only taking Enraged at this tier.
Level 20:
If the enemy groups up a ton go Slaughterhouse, this is the 20 i take most of the time.
Bolt of the storm can be good if the enemy has a lot of slows and you need to have an escape ready.
Nexus Blades is good if the other 2 don’t need to be chosen.
and NEVER choose Fires of hell, just don’t
Tips for the Butcher:
You work better with teammates who like to dive such as Genji, Tracer , Kerrigan, Kharazim, Tyreal just to name a few
Do not engage a team fight let the tank do it and you follow up.
You work well against backliners with minimum escape so that’s when to pick him in draft.
Good luck in games with him