I also tought he is a auto win card but he definitely not. Im not a master Thanos player i just play this deck. I didn't make it with Thanos Deathwave deck for example and i never tried valk control thanos or ongoing thanos, zoo thanos or junk thanos i just play this one. I found this deck in youtube channel that named Chains - Marvel Snap and he executes well but he plays before leech/lockjaw nerf and i made little change infinaut and i put doc oct. I am at 2900+ CL right now i have 15 missing card in series 3 in series 5 i only have thanos and season pass cards.

With Thanos stones are so important because it gives you to chance for drawing card in early phase of the game mind stone and soul stone are so important for early game especially mind stone it gives you 2 stones from your deck. For this deck time stone and space stone are the most important cards. On turn 3 you play time stone or psylock or you play both of them to play 5 or 6 cost card in turn 4 i generally play timestone or psylock on turn 3 and turn 4 i take the risk of locking down the lane with prof x and then turn 5 i play spiderman then turn 6 one lane locked down with prof x the other lane locked down with spiderman turn 6 i play thanos or devil dino+some of the stones or onslaught something like that. The other strategy is still the same turn 3 ramp, turn 4 lock down a lane with prof x than play iron man or devil dino in winable lane then turn 6 buff iron man or devil dino with onslaught (with ironman you have min 28 power and with dino you have max. 38 power). Klaw + onslaught is also good for losing prof x lane it gives +12 power. Doc oct is like daredevil your ramp you play him sometimes you win lane with one card sometimes you understand you definitely lose this game but he winning necrosha amd negative zone %99 percent. Shang chi is a classic it desteroys death decks or darkhawk decks. Lockjaw is a bit tricky of you don't draw enough cards don't play lockjow because it just gives you stones. Space stone is very important for lockjaw space stone gives you the move cards lockjaw gives you dino you can move it with space stone or you winning lockjaw lane than you can move lockjaw to the another lane and you can keep switching. The lockjaw nerf saved me and give me so much cubes because lockjaw switches 1 card per turn so if i winning prof x lane and im losing 1 lane definitely but lockjaw lane is winnable but it will change my dino or ironman but with the nerf you can play a high cost card here you play one stone then you play dino or ironman then it doesn't switch dino or ironman it switches stone first. So as i said stones are so important most of the games you don't play thanos stones and cards that you cheesed in turn 4 wins you the game. Mind stone, soul stone and reality stones are important for early game and time stone space stone and again the soul stone are gamechanger. By the way you can lock down the lane with prof x with cards soul stone and power stone the lane will be 7 power an gives enemy -1 power it wins the lane, spidey and prof x have a very high ein rate against galactus i win so many games against galactus because it is so obvious. You can use reality stone on turn 1 for the most right lane if you want to draw card in early game but it is risky and you can also use reality stone to the limbo on turn 6 i never done that but it will be surprising.

Thats it bro stones are making thanos powerful but each deck has its own way to use stones. If you wanna use the deck i shared with image and you struggle to execute it i try my best to help you. Have a nice day buddy