Spell #62086 (possibly named "Test Of Strength Channel Firework Large") doesn't exist. It may have been removed from the game.
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Test of Strength, Channel Firework, large - Live
Test of Strength, Channel Firework, large - PTR
Test of Strength, Channel Firework, large - PTR 2
Test of Strength, Channel Firework, large - Wrath of the Lich King
Test of Strength, Channel Firework, large - Cataclysm