Red Sun, the Noon Rider

Haste, Protection from Red, Trample
If Baba Yaga is your commander, you may treat
the {r} in Red Suns mana cost as {c} instead.
At the beginning of your upkeep, if you also
control creatures named Bright Day, Dawn Rider
and Black Night, Midnight Rider, exile all three,
and return them to the battlefield transformed as Agents of the Bone Mother.