Also commonly called Godfest Exclusives (GFE) by the community, these are cards in a special series that only become available during godfests, special egg machines, or select events.
List of Fest Exclusives (as of June 2020)
Below are base forms, shown in order of PAD ID:
Monster Exchange
In addition to their use as leaders and subs, they can also be used during select events in the Monster Exchange tab to trade for high rarity collab cards.
When in doubt, reach out!
For example, to exchange for Yugi Muto during Yu-Gi-Oh collab, you can exchange 5 of the Fest. Exclusives in the list for him. Identical duplicates of the Fest. Exclusives can be used.
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[5780] Yugi Muto & Silent Magician 武藤遊戯＆沈黙の魔術師 ▼ Trade 5 cards in. |
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The rates of exchange depends on the rarity of the cards. In addition, exchange lineups (of Fest. Exclusives) may not be the same on subsequent reruns of the event.
Godfest Exclusive vs. Fest Exclusive
The reasoning for the rebranding is due to the introduction of certain Fest. Exclusive Cards which lack 
God Typing, such as Madoo
or Shelling Ford
.