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C Common Megalith Phuloch X EARTH Level 4 [ RockRitualEffect ] ATK 2000 DEF 300 You can Ritual Summon this card with a "Megalith" card

C Common Fusion Destiny X SPELL Fusion Summon 1 Fusion Monster from your Extra Deck that mentions a "Destiny HERO" monster as material, using monsters from your hand or Deck as Fusion Material, but destroy it during the End Phase of the next turn, also for the rest of this turn after this card resolves, you cannot Special Summon monsters, except DARK "HERO" monsters

Not your typical catchy name for a new mechanic, but in this case, it does exactly what it says in the name

along with things like Mystery Boosters and The List

Conspiracy Conspiracy is another example in Black

using one copy of Salamangreat Heatleo to summon another)