Entomb

Search your library for a card, put that card into your graveyard, then shuffle.

Omniscience

You may cast spells from your hand without paying their mana costs.

Demon of Fate's Design

Flying, trample
Once during each of your turns, you may cast an enchantment spell by paying life equal to its mana value rather than paying its mana cost.
{2}{B}, Sacrifice another enchantment: Demon of Fate's Design gets +X/+0 until end of turn, where X is the sacrificed enchantment's mana value.

Swamp

Reanimate

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.

Dark Ritual

Frantic Search

Draw two cards, then discard two cards. Untap up to three lands.