Colors and Card Draw Blue is by far the easiest color for card draw
Milling three cards has a good chance to mill a Slime Against Humanity, buffing your future Oozes, and youll be able to return lands or other small permanents to the field as you see fit
It doesn't copy any information about the object the card was before it was put into your graveyard
This usually just means having four or five cards of higher rarity that play off incubate like Elvish Vatkeeper, Corruption of Towashi, Glissa, Herald of Predation, and Teysa Karlov (to give your fat tokens lifelink)
The major archetypes for children in Magic art are either bystanders like Jaffy, students such as Disruptive Student, or joke cards (more on this later)
Its a Reins of Power-like thing that everyone gets in to