Personally, I really like Marina Vendrell because there are no restrictions when building around them, giving you access to every enchantment ever printed in Magic: The Gathering
The deck starts by casting efficiently-costed dinosaur creatures with huge bodies and with powerful secondary abilities including draw effects (Atla), removal (Burning Suns Avatar, Kogla and Yidaro, Scion of Calamity, Wakening Suns Avatar, Zacama), free spells (Etali, Gishath), creature tokens (Ghalta and Mavren, Palanis Hatcher, Regisaur Alpha), acceleration (Hulking Raptor, Regal Behemoth), monarch (Regal Behemoth), haste (Regisaur Alpha), clone (Sunfrill Imitator), life gain (Verdant Suns Avatar, Zacama), and many many more
Every 1/1 creature it created allowed Nadu to get two new draw triggers, which you would hope to get another land off of in order to repeat the process
They dont stay for more than one song, though, and will leave just as quickly as they arrived