Best Class for Bucklers
Ranger and Huntress reach the most buckler passives: 24 within 20 points of the class start and 25 within 30 (the tree has 26). Next: Mercenary (22), Monk (18). The nearest buckler notable for Ranger is Consistent Intake, 9 points away. No ascendancy node names bucklers. Patch 0.5.5, from the game files.
All 8 classes for bucklers
Passives whose text names Buckler or Parry (the Buckler skill), within 15, 20, 30 points of each class start; sorted by the 20-point count.
#1Ranger15 within 1524 within 2025 within 30+17 Block within 20starts with
Crude Bow· same tree start as Huntress
#2Huntress15 within 1524 within 2025 within 30+17 Block within 20starts with
Hardwood Spear· same tree start as Ranger
#3
#4
#5
Warbringer:
Block Chance1 asc. pt
Renly's Training2 asc. pts
Block Chance3 asc. pts
Turtle Charm4 asc. pts
#6Witch0 within 151 within 2024 within 30+11 Block within 20starts with
Withered Wand· same tree start as Sorceress
#7Sorceress0 within 151 within 2024 within 30+11 Block within 20starts with
Ashen Staff· same tree start as Witch
#8
9 buckler notables on the tree
Consistent Intakenearest: Ranger, 9 pts15% increased Parried Debuff MagnitudeCannot be Critically Hit while Parrying
Flashy Parryingnearest: Ranger, 9 pts12% increased Block chance20% increased Parried Debuff Duration
Reverberating Parrynearest: Ranger, 14 pts15% increased Parried Debuff Magnitude20% increased Parry Hit Area of Effect
Resolute Reprisalnearest: Ranger, 16 pts30% increased Parry RangeYour Heavy Stun buildup empties 50% faster if you've successfully Parried Recently
Swift Interruptionnearest: Ranger, 16 pts12% increased Attack Speed if you've successfully Parried Recently6% increased Movement Speed if you've successfully Parried Recently
Knight of Chitusnearest: Warrior, 17 ptsGain Deflection Rating equal to 12% of Evasion Rating15% increased Block chance15% increased Parried Debuff Magnitude

Bastion of Lightnearest: , Infinity ptsBlind Enemies 3 metres in front of you every 0.25 seconds while your Shield is raisedRaise Shield inflicts Parried for 2 seconds on Hit
How this is counted
Read from the passive tree in the game files (26 passives name Buckler or Parry; 61 more apply to Block). For each class we count the passives you can allocate with 15, 20 and 30 points from its start: every passive on the shortest path costs a point, and another class's start can't be walked through. Block passives also work with bucklers but are shared with other weapons, so they only break ties. Ascendancy nodes count the points from the ascendancy start (8 points in total). Ranger and Huntress, and Witch and Sorceress, share a start, so their tree numbers are equal. Plan the path yourself in the passive tree planner.
