Spawns a familiar that leaves a trail of creep that damages enemies at 6 damage per second. Has a chance to spawn damaging beams of light onto enemies that touch the cloud.
Quote
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Effects
Spawns a familiar that follows Isaac and leaves behind a trail of damaging blue creep.
The creep deals 2 damage per tick or 6 damage per second to non-flying enemies.
If the cloud touches an enemy, it has a small chance to spawn a damaging Holy Light beam onto the enemy.
The light beams deal 20 + Isaac's tear damage per tick and may strike an enemy up to 8 times.