Dahlia, Mother of All

Creature spells in your graveyard have convoke. You may choose not to untap Dahlia during the untap step. Whenever you cast a spell, Dahlia has indestructible until end of turn.

Incubate—You may only activate this ability during your turn and if Dahlia, Mother of All doesn't have indestructible. {p/b}{p/b}, {t}: Mill the top 5 cards of your library. For as long as Dahlia is tapped, you may play those spells. End your turn.
{ut}: Draw a card. Discard a card unless you control a different Or