Source: MMOWTS
Summon Druid is one of the most effective builds in Diablo 2:Resurrected Ladder and its targeted boss kill can be very effective. At the same time, it uses the Summoning tree to achieve a command attack on Ravens and expands AoE by summoning.
For more efficient upgrades, some D2R Ladder Items that Summon Druid fits into are essential, the following Runewords are the best options that can be equipped in slots for weapons, shields, etc.
1. Beast Runeword supports Axe, Hammer, Scepter three weapons. It provides Summon Druid with level 9 Fanaticism Aura, which is one of the most important skills and increases the damage and attack rating of a range of summoning skills and mercenaries. Beast's Runes combination is Ber+Tir+Um+Mal+Lum.
2. The Call to Arms Runeword is only used as a switch weapon, players can use it to quickly switch to use Battle Cry to debuff enemies while bringing additional skills, health and damage. The Runes combination of Call to Arms is Amn+Ral+Mal+Ist+Ohm.
3. Spirit Runeword can bring faster casting and all skills +2 buffs to Summon Druid Build's shields. The combination of Spirit's Runes is Tal+Thul+Ort+Amn.
4. Enigma Runeword applies to Chest Armor, And the buff to Summon Druid is amazing, it can bring a larger range of summoned animal attacks. Enigma's Runes combination is Jah+Ith+Ber.
If you're also trying the Summon Druid Build in Ladder Season 1, getting the aforementioned Runewords requires either farming or buying. MMOWTS.com is a good helper for you to improve your Ladder ranking. You can get more information and news here, so stay tuned.