While haywire, the Fel Reaver's annihilation impacts the target area twice. The primary blast inflicts 335.8535 Fire damage split between players within 4 yards and knocks them back.
The secondary blast hurls shrapnel that inflicts 335.8535 Fire damage split between players within 4 yards and knocks them back.
Impacts from either explosion that are not absorbed inflict 223.9024 Fire damage to everyone.