Blood Surge

3 different WoW Forever spells share the name Blood Surge. Each is a separate effect with its own tooltip; pick the one you mean to compare it with Classic Era.

• Blood Surge #413380 unchanged Heroic Strike, Bloodthirst, and Whirlwind have a 30% chance to make your next Slam within $413399d instant, strike with both melee weapons, and cost no Rage.
• Blood Surge #413399 unchanged Your next Slam is instant cast and costs no Rage.
• Blood Surge #415743 unchanged Gain the Blood Surge ability: $@spellicon413380 $@spelldesc413380