Changes

{{Infobox/Yu-Gi-Oh!/Episodeepisode | series = Yu-Gi-Oh! GX | season = 3 | image name = Series146.jpg | image size = 200px | image caption = | english en_name = Conquering the Past, Part 1 | kanji ja_name = 封印された融合 | romaji romaji_name = Fūinsareta Yūgō | japanese translated ja_trans_name = The Sealed Fusion | episode number = 146 | japanese air date ja_air_date = July 25, 2007 | english air date en_air_date = May 31, 2008 | japanese opening ja_opening = [[Teardrop]]<br />ティアドロップ | japanese ending ja_ending = [[Sun]]<br />太陽 | english opening en_theme = [[Get Your Game On! (song)|Get Your Game On!]]featured_card = Armored Cybern | featured card screenwriter = Armored CybernJunki Takegami

Jaden draws "Polymerization". Jaden's hand contains "[[Elemental Hero Burstinatrix (anime)|Elemental Hero Burstinatrix]], "[[Elemental Hero Wildheart (anime)|Elemental Hero Wildheart]]", "[[Elemental Hero Bladedge (anime)|Elemental Hero Bladedge]]", "[[Hero Mask (anime)|Hero Mask]]", and "[[Feather Shot (later anime)|Feather Shot]]". Jaden Normal Summons "Elemental Hero Burstinatrix" (1200/800) in Attack Position. "Burstinatrix" attacks "Fiend Slime Mold", but Baou activates his face-down "[[Gravity Gain]]". Now all Level 4 or lower monsters can't attack. During each of Baou's Standby Phases, he must either Tribute one monster or destroy "Gravity Gain". The attack made by "Burstinatrix" is then nullified.

* [[Feather Shot (later anime)|Feather Shot]]