Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.
Unless stated otherwise, everything here is Diablo II: Resurrected build 3.3.93847, Reign of the Warlock.

Passive: increases the resistances of all summoned creatures.
Summon Resist is a level 24 Necromancer passive (Summoning tree, requires Golem Mastery; it unlocks nothing). It costs nothing to use and casts nothing: when a skeleton, a skeletal mage or a golem is summoned it is given +resistance to fire, lightning, cold and poison, all four at the same number, on a curve that starts at 28% with one point, reaches 57% at level 10 and 66% at level 20, and can never pass 75%. The curve is the whole story: the first point is worth 28, the twentieth is worth 1.
| Level | Resist All: + |
|---|---|
| 1 | 28% |
| 2 | 34% |
| 3 | 39% |
| 4 | 44% |
| 5 | 47% |
| 6 | 50% |
| 7 | 52% |
| 8 | 54% |
| 9 | 56% |
| 10 | 57% |
| 11 | 59% |
| 12 | 60% |
| 13 | 61% |
| 14 | 62% |
| 15 | 62% |
| 16 | 64% |
| 17 | 64% |
| 18 | 65% |
| 19 | 65% |
| 20 | 66% |
| 21 | 66% |
| 22 | 67% |
| 23 | 67% |
| 24 | 68% |
| 25 | 68% |
| 26 | 68% |
| 27 | 69% |
| 28 | 69% |
| 29 | 70% |
| 30 | 70% |
dm12, the diminishing curve between Param1 20 ("Resistance % Min") and Param2 75 ("Resistance % Max"), which the Basin writes as min(20 + 55 × (110 × level ÷ (level + 6)) ÷ 100, 75): 28% at level 1, 47% at level 5, 57% at level 10, 62% at level 15, 66% at level 20, 68% at level 25, 70% at level 30. The Basin's level-by-level table reaches 75 only at level 60.The line reads lvl, so +skills from items count in full; a +1 from a wand is a step up the same curve.
Summon Resist is a passive state (passivestate "summonresist") that sets the passive_summon_resist stat on the Necromancer; the minion skills read it when they summon. The Basin's rules:
The immunity is invisible. A minion the Basin's rule has pushed past 99% shows no immunity in its display, and a minion summoned before you put on +Summon Resist gear keeps the lower figure until you summon it again.
No synergies: Summon Resist has no dsc3 lines, no …SymPerCalc column, and no skill names it as a synergy. It is read as a stat on the caster at the moment of summoning. Because the curve is read at full level, +skills from items are worth the same as hard points, and because the curve flattens, the first point is worth more than the next nineteen together: 28% for one, 38 more for the other nineteen. The Basin lists the +1–3 Summon Resist affix on wands and shrunken heads of item level 24 and above.
Summon Resist never touches a player. It changes what the minions take from a player's elemental hits, which are themselves cut to 17% by the player-versus-player rule as any hit is; see Player versus Player.
Written from the game's tables (build 3.3.93847) and the cited pages; a per-level table is computed from skills.txt and skilldesc.txt by the same evaluator the skill pages use. A “legacy rule” is a published engine rule no table proves; a “game table” is read from the table named. · Report incorrect data