The Tavern

If not, why do we have 5 pips for max MR? I see alot of new players wearing 5 pips of MR, often sacrificing other resistances to get it.

the enchantress can, technically speaking

Ancient liches and Pan lords can.

Paralysis (and maybe other effects) from chaos-branded melee (Eldritch Tentacles, some random Panlords, but not Killer Klowns) doesn't check MR at all!

Oh, and also vault sentinels.

I remember checking a game where PC got paralyzed by A.Lich despite having 5 pips.

The game doesn't display more than 5 pips, but what happens if I wear 6 items of MR+? Is there a cap, or do I keep getting (diminishing) returns?

There is no cap and there are no diminishing returns, it is linear increase. You will see 0% for all monster spells.

Sorry for the lack of clarity, the 'diminishing' was aimed at the actual increase in benefit. Once all monsters spells have been reduced to a literal 0%, the benefit of adding further MR+ is of course 0, so as diminished as it can get.

So for a hypothetical near-invincible zig character, walking around with 4 sources of MR+ from gear might be quite reasonable.

I believe having even 1% chance to be paralyzed is incompatible with near-invincible. 5 pips is a must for me unless I have 4 pips and a ring of MR to swap as needed.
You can check it easily, just equip different MR items and check Ancient Lich via "?/m".

Is the chance to be affected number rounded? Is 0% really <0.5%?

Code:: /** * Compute success chance for MR-checking spells and abilities. * * @param mr The magic resistance of the target. * @param powc The enchantment power. * @param scale The denominator of the result. * @param round_up Should the resulting chance be rounded up (true) or * down (false, the default)? * * @return The chance, out of scale, that the enchantment affects the target. */ int hex_success_chance(const int mr, int powc, int scale, bool round_up) { const int pow = ench_power_stepdown(powc); const int target = mr + 100 - pow; const int denom = 101 * 100; const int adjust = round_up ? denom - 1 : 0; if (target <= 0) return scale; if (target > 200) return 0; if (target <= 100) return (scale * (denom - _triangular_number(target)) + adjust) / denom; return (scale * _triangular_number(201 - target) + adjust) / denom;

Edit. Removed wrong info.

Rounding up would make more sense. I would be annoyed if it said 0% and then I end up paralysed.

Monster hex success chances are rounded up before being displayed (hex_chance in describe.cc), while player hex success chances are rounded down (desc_success_chance in spl-cast.cc). The idea is precisely what 4H2A alluded to: it would be annoying to be told that something bad (being affected by a monster hex, or failing to affect a monster with your own hex) had a 0% chance of happening, then have it happen.

I just got enraged by a moth of wrath at +++++, but I don't know if it checks MR.

It does not.

Still, it probably is confusing to show more than 4 pips.

The Tavern

is there any monster that can beat 4 pips MR?

is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?

Re: is there any monster that can beat 4 pips MR?