Better Spellcasting
Modby K4yne
A mod that integrates Better Combat and Iron's Spellbooks by allowing you to assign spells to weapon attacks
Type
Mod
CurseForge Downloads
217,884
CurseForge ID
1446462
Last Updated
Sep 5, 2026
Description

Please make sure that your Iron's Spellbooks version is up to date!
Better Spellcasting
Bind spells to your weapon attacks!
This mod allows you to attach spells from Iron's Spells 'n Spellbooks to individual weapon attacks in a combo chain.
Features
- Spell-Infused Combos: Attach different spells to each attack in a weapon's combo chain
- Flexible Targeting: Spells can target enemies or yourself (for buffs/heals)
- Customizable Per-Weapon: Define spell combinations in JSON for any weapon
- Mana-Free Casting: Weapon spells don't consume mana by default
- Combo Tracking: The mod accurately tracks your attack combo, even when swinging in the air
How It Works
Define spells in your weapon's Better Combat JSON file:
diamond_sword.json
{ "attributes": { "attack_range": 2.5, "category": "sword", "attacks": [ { "hitbox": "HORIZONTAL_PLANE", "damage_multiplier": 1, "angle": 120, "upswing": 0.5, "animation": "bettercombat:one_handed_slash_horizontal_right", "swing_sound": { "id": "bettercombat:sword_slash" }, "spell": "irons_spellbooks:firebolt", "level": 1, "target": "TARGET""trigger": "on_attack" }, { "hitbox": "HORIZONTAL_PLANE", "damage_multiplier": 1, "angle": 120, "upswing": 0.5, "animation": "bettercombat:one_handed_slash_horizontal_left", "swing_sound": { "id": "bettercombat:sword_slash" }, "spell": "irons_spellbooks:blood_slash", "level": 4, "target": "TARGET"
"trigger": "on_attack" }, { "hitbox": "FORWARD_BOX", "damage_multiplier": 1, "angle": 0, "upswing": 0.5, "animation": "bettercombat:one_handed_stab", "swing_sound": { "id": "bettercombat:sword_slash", "pitch": 1.2 }, "spell": "irons_spellbooks:heal", "level": 1, "target": "SELF"
"trigger": "on_hit" } ] } }
In this example, a diamond sword would cast Firebolt on the first attack, Blood Slash on the second, and Heal (on yourself) on the third!
Spell Properties
- spell: The spell ID (e.g., "irons_spellbooks:firebolt")
- level: Spell level (1-...)
- target: Either "TARGET" (hits enemy) or "SELF" (casts on you)
- trigger: Either "on_attack" (casts spell everytime) or "on_hit" (casts spell only after enemy is hit)
Limitations
- Continuous cast spells are not supported (spells that channel over time won't work with instant weapon attacks)
- You can only attach 1 spell to an attack
- Requires both Better Combat and Iron's Spells 'n Spellbooks
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Recommended Gear
AffiliateHardware and extras that pair well with this mod.
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