Genesis Genesis is an incarnation from the original cycle that saw a reprint in Modern Horizons 1 , but unfortunately its still not good enough for Modern
Beasts are exactly what it says on the tin: the wild creatures of the woods that dont quite fit into the usual archetypes (Bears, Ox, etc.)
The price is also heavily tied to the specific artifacts on the bonus sheet within
Similarly, any as [this permanent] enters the battlefield or [this permanent] enters the battlefield with abilities that the token has copied will also work
For nine generic mana you get a 9/9 flying creature Saga that destroys a couple nonland permanents, draws two cards, and deals massive amounts of damage to your opponents' faces over the course of four turns
Brightcap Badger and Infested Thrinax each promote overwhelming your opponent with saprolings and the more of them you have, the more powerful these cards are