Summon an explosive rune under an enemy that etches foes nearby with scrawled glyphs, dealing 21560 Magic Damage over 20 seconds. The rune lingers on the initial target for 6 seconds before detonating, dealing 5623 Frost Damage to enemies within 7 meters. Rune detonation cannot be primed with Fulminating Rune again for 6 seconds. Up to 3 allies near the initial target can activate the Runebreak synergy, dealing 10887 Frost Damage to enemies within 7 meters.
