Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card can be used to Ritual Summon any EARTH Ritual Monster. You must also Tribute monsters from your hand or field whose total Levels exactly equal the Level of the Ritual Monster you Ritual Summon.
--大地讃頌
--Earth Chant
local s,id=GetID()
function s.initial_effect(c)
	Ritual.AddProcEqual(c,aux.FilterBoolFunction(Card.IsAttribute,ATTRIBUTE_EARTH))
end