So your saying your overpowered I rolled perfect for my toon can do as much as a T Rex at the same lvl, whoopdy freaking do. Also what isnt being talked about is a druid summoning 8 pixies that cast poly on your whole party so you have 4 T Rexs running around with 4 more pixies waiting in the wings to cast it again.

Once the aquatic creature dies do to lack of water it reverts back to whatever HP it had before being polymorphed optimally the player wants to pick something like a turtle which is slow to move on land but won’t die until something attacks it.

it straight up says they do…

My group use dices. I got a 17. I started the game with a 19 in Str.
17 (dice) + 2 (racial)

It’s a small thing, but how did you get a 19 Str AND a feat at 6th-level? Assuming you went with a race w/ +2 Str (and are using RAR ability scores) you should have started with Str 17 (15+2), then increased it to 19 OR taken a feat at 4th level…

19 Str, Savage attacker feat and a magic Maul +1 (+1d6 of cold damage). 2 attacks of 3d6+8 and one attack with 5d6+8 (talent). Total: 11d6+24 per turn.

At lvl 6 you have 2 attacks and +2 with rage (which isn’t something you can use 24h but w/e). Let’s say you, somehow, have 20 STR. That’s still a +8 hit and +7 damage. As a berserker, you can use your bonus action to get one more attack with frenzy, making 3 attacks/round. So you are doing 20.5 damage/attack. What gear exactly is that doing 13.5 AVERAGE damage? It seems your DM has been a nice guy to your party.