Loyal Demon Blood Sphere

When Forgotten Ritual enters the battlefield,
mill the top five cards of your library.
For each card put into your graveyard this way, you
may return a creature card from your graveyard to
the battlefield tapped.
Whenever you cast a spell, you may pay {u/b}{u/b} If you
do, gain 2 life.
{u/b}{u/b}{u/b}{u/b}, Sacrifice Loyal Demon blood sphere:
Draw a card. Then put up to six target land, enchantment, or artifact cards from your graveyard
on the bottom of your library in any order.