ccc deck yugioh Complete Custom for Yu-Gi-Oh! 5D's C/C and Support [Anime] -

During your Main Phase: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using this card you control and other monsters from your hand or field as material

Frog decks send Monsters to the Graveyard frequently, meaning Dupe Frog is going to be resolving quite a bit

Number 38: Hope Harbinger Dragon Titanic Galaxy X LIGHT Rank 8 [ Dragon / XyzEffect ] ATK 3000 DEF 2500 2 Level 8 monsters Once per turn, when a Spell Card or effect is activated on the field (Quick Effect): You can negate that effect, and if you do, attach that card to this card as material

It's not weak, but it's also true that there are many situations where other Xyz is stronger