printscreen button also cannot use?
if can, you  can use it then paste in paint to save as jpg.

eg. those low hp range hero such as sniper, drow, venom...., most of the time when chase by ursa, night stalker,.... (in lvl 6), most of them will not able to run away and mostly kill by them. Now with centaur ulti help, those hero can't even get near them cos it will auto stun and dmg themselves. It provide centaur team with too much mobility advantage and "self auto protection shield" compare to other team.

Dark seer can give 1 hero fast movement speed but not together with "shield".

eg. In level 6, Axe mostly will not able to farm blink dagger yet so it is not easy for him to get near hero and Berserker's Call but now if he team with centaur, he can be very effective even in level 6, centaur give him movement speed, he run near, opponent get stun, he battle hunger then Berserker's Call, finally ulti. Ward cannot help u as he is not hiding ambush, he just simply farming same lane with you, in front of you, most range hero is 600 range, so when centaur and axe also level 6, he ulti, then the axe sure can reach the opponent range hero.

I think its match maked according to the amount of wins you have