Nature's Starry Guide

When Nature's Starry Guide enters the battlefield
and on your upkeep, you may mill the top card of
your library. During your turn, You may cast
creatures from your graveyard that were sent this
way.
Creatures cast from your graveyard get a +1/+1
Star counter. Creatures with a Star counter gain:
"When this creature dies: add one {g} or {b}"
{b/g}: Mill the top card of your library.