<?php
 
$s = "\"[[Elemental HERO Flame Wingman]]\" + \"[[Elemental HERO Sparkman]]\"\nMust be [[Fusion Summon]]ed and cannot be [[Special Summon]]ed by other ways. This card gains 300 [[ATK]] for each \"[[Elemental HERO]]\" card in your [[Graveyard]]. When this card [[destroy]]s a [[Monster Card|monster]] [[Destroyed by Battle|by battle]] and [[send]]s it to the Graveyard: Inflict [[Effect Damage|damage]] to your opponent equal to the ATK of the destroyed monster in the Graveyard.";
$s = preg_replace('/(\[\[([\w\s]*)\|)/', "" , $s);
echo $s;

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