This is a Limited Edition Alpha -era mechanic, designed back when the game was still figuring out what counted as "simple," "intuitive," or "likely to cause a rules argument in a kitchen somewhere." The idea was flavorful enough: some Creatures were just too stubborn, too unnatural, or too deeply connected to the land to stay dead
I know, I know, if you untap with it, you'll get to draw a card every time you cast a spell, plus all the normal draw steps of your opponents
If we add White do our deck and go Naya, we open ourselves to even more noncreature-hate options to slow down our opponents: stuff like Gaddock Teeg, Eidolon of Rhetoric, and Thalia, Guardian of Thraben
Tiny Tails, Big Adventure Dive into the woodland fantasy of Bloomburrow, where mice, frogs, bats, squirrels and more defend the Valley from elemental chaos