Can be used by revealing 1 "Polymerization" Spell Card or "Fusion" Spell Card in your hand when you have no Field Spell on your field. Play "Supreme Kings Castle" from outside your deck. This skill can only be used once per duel.
| Character | How to Get |
|---|---|
 The Supreme King | Legendary Duelist/PvP Duel Reward |
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| Duel Links forums | |
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 General discussion |  Vagabond trade |
 Deck advice |  Duel room |
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 Level rewards |  Duel rewards |
| Skill pages | |
 Skill database |  How to get drop skills |
| Card Trader | Ranked Rewards |
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 Card Trader |  Ranked Rewards |
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 Cards you should trade |  How to beat the Vegabond |  How to solve Duel Quizes |
| Standard Duelists | ||
|---|---|---|
| Lvl 14 | Lvl 20 | Lvl 27 |
| Lvl 33 | Lvl 39 | Lvl 45 |
| Lvl 51 | Lvl 57 | - |
| Legendary Duelists | ||
| Lvl 30 (DM) | Lvl 30 (GX) | Lvl 30 (5D's) |
Polymerization
Supreme Kings Castle
