One of the promos, that specifically works with “Radiant Divine Bird Vene”.

原初の叫喚 Gensho no Kyoukan (Primal Cry)

Ritual Spell Card

This card is used to Ritual Summon “Radiant Divine Bird Vene”.

(1) You must also Tribute monsters from your hand or field whose total Levels equal 8 or more.

(2) During your End Phase: You can banish this card from your Graveyard, then target 1 Ritual Monster in your Graveyard that was sent to the Graveyard from the field this turn; Special Summon that monster.

Source