During the End Phase, if this card is in the GY because it was destroyed by battle and sent there this turn: You can Special Summon this card, and it gains 500 ATK/DEF
This was made further evident with the release of Structure Deck: Harpie Lady Sisters , where-in the Deck was given access to multiple Contact Fusions
In terms of power level, most of them would sit roughly between 3 and 5 out of 10, with the more powerful ones coming from Commander 2020
Number 96: Dark Mist X DARK Rank 2 [ Fiend / XyzEffect ] ATK 100 DEF 1000 3 Level 2 monsters Once per battle, when an attack is declared involving this card and an opponent's monster (Quick Effect): You can detach 1 material from this card
Though the Morningtide black enchantment is undoubtedly the best, all three of them are similarly useful at generating a steady stream of tokens each turn
What the hell CAN he do with them