Just some technical stuff.
It’s confirmed that Sevens Paladin gains ATK based on the total Attributes among both Graveyards, reaching a maximum of 5300 ATK! (If there’s FIRE, WIND, WATER, DARK, LIGHT and EARTH among both your and your opponent’s Graveyards, it gains 2400 ATK [6 Attributes times 400 ATK])
The 7 more low key Fusions in the Set are designed as tie-in cards to use with your Battle Decks.