Reducing Monster Hit Points?

[keterys]

Well, if you want less predictable combats, there are lots of ways to do it. For example:

Every attack, roll 1d6 as a wild die. On a 6, the attack deals double damage.

And then your 20-6 combo is a scary crit, indeed.

 

[Stalker0]

Well, if you want less predictable combats, there are lots of ways to do it. For example:

Every attack, roll 1d6 as a wild die. On a 6, the attack deals double damage.

And then your 20-6 combo is a scary crit, indeed.

You could also make it less frequent but scarier.

You only roll the wild die on crits, but each number has a different painful effect.

1 - prone
2 - slow
3 - immobilized
4 - dazed
5 - stunned
6 - double damage

just as one example.