Verdant Force and Tendershoot Dryad give us an interesting example of power creep
The first level, which is yours for just three mana, lets you draw the first time you create a token each turn
Just like with energy counters in Standard, Solemnity keeps players from getting infect counters, which makes it almost impossible for the typical Infect deck to win the game while Solemnity is on the battlefield
The two brothers, Uzra and Mishra, both fought with the might of machines and mostly ignored the natural forces of the world
Those tokens gain haste until end of turn
I designed a version of Akroma that returned to the battlefield whenever it died, but Bill Rose was much more interested in a creature that just appeared very powerful