I found out the Hybrids work like this :
So here is my Hybrid Monster.
Lore: 1 Level 7 or higher Dragon-Type monster + 1 "Heavy Storm"
A Hybrid Summon of this card can only be conducted by removing from play in your hand or side of the field the above Hybrid Material Cards (you do not use "Molecular Fusion). When this card is Hybrid Summoned, destroy all Spell and Trap Cards on the field. Once per turn, you can destroy 1 Spell or Trap Card on the field.
Thanks. Please comment !