setIcon(<naturesaura:animal_spawner>)

setTitle("Darkosto's Birthday")

setDescription("Create an Altar of Birthing and obtain a Spirit of Birthing, for summoning more exotic creatures")

addParent("heavens:bookchap4/17offeringtable")
addParent("heavens:bookchap4/10iridescentaltar")

setRequiresParents()

setPos(360,40)

criteria1 = addCriteria("hasItemsFurnace", "minecraft:inventory_changed")
criteria1.addItem(<naturesaura:animal_spawner, count:1~>)
criteria2 = addCriteria("hasItemsSpirit", "minecraft:inventory_changed")
criteria2.addItem(<naturesaura:birth_spirit, count:1~>)

addRewardItem(<naturesaura:birth_spirit, count:5>)