Dark · On units
Black Grudge
A filthy black wind that both lowers accuracy and weakens multiple enemies.
Rencor negro
Spell scene
Choose the units and replay the cast with the cartridge’s sprites and sounds.
Press Replay or Resume to activate sound.
Spell drawing
Black Grudge
This unit uses its idle pose for chanting or casting.
Illustrative reconstruction: frames, palettes and effect timings come from the ROM. Part placement and drawing speed are choices of this viewer.
Outcome and status application are selected for the demonstration; they are not a battle roll.
How to cast it
Draw these runes in order, each in one stroke, while holding L.
MP cost
It goes down as Isaac’s level in each rune’s element rises.
| Element level | 1–10 | 11–20 | 21–30 | 31–40 | 41–50 |
|---|---|---|---|---|---|
| MP | 70 | 66 | 62 | 58 | 54 |
Aim
Draw a circle. Touch a centre inside the range and drag out to set the radius.
Affects: Enemies
What it does
- Duration
- 1 s · 60 ticks
- Cast range
- 200 px
- Radius
- 60 px
Status: Curse
- Chance
- 60.2 %
- Lasts
- 18 s · 1080 ticks
At element level 1–10 with a drawing quality of 1. It rises with both.
Similar spells
The 6 spells that run on the same game code as this one. Only what changes between them is shown.
| Spells | Element | MP (level 1–10) | Cast range | Radius | Runes | Status chance | Status lasts | Aim | Affects |
|---|---|---|---|---|---|---|---|---|---|
| Curse | Dark | 20 | 100 px | — | 1 | 50 % | 18 s | Tap a unit | Enemies |
| Black Curse | Dark | 50 | 200 px | — | 2 | 60.2 % | 18 s | Tap a unit | Enemies |
| Black Grudge | Dark | 70 | 200 px | 60 px | 2 | 60.2 % | 18 s | Draw a circle | Enemies |
| Black Bind | Dark | 85 | 200 px | 60 px | 2 | 60.2 % | 18 s | Draw a circle | Enemies |
| Magic Over | Light | 75 | 120 px | 50 px | 2 | 100 % | 25 s | Tap a unit | Allies |
| Dark King | Dark | 50 | 140 px | — | 3 | 100 % | 18 s | Tap a unit | Enemies |