Whenever you discard a card, you may exile that card from your graveyard. If you do, you may play that card this turn.

, : Return target enchantment card from your graveyard to your hand.

: Manifest a card from your hand. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

: You may put a land card from your hand onto the battlefield.

: Put target card from your graveyard on the bottom of your library.

, or , : Return target artifact creature card from your graveyard to your hand.

Changeling (This card is every creature type.)

Reach

: Put target card from your graveyard on the bottom of your library.

, Exile this card from your graveyard: Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Double strike

When this creature enters from your graveyard, you may discard your hand. If you do, draw three cards.

Unearth

(Melds with Mishra, Claimed by Gix.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When this creature enters, you may return target creature card with infect from your graveyard to your hand.

, : Target player exiles a card from their graveyard. If it's a creature card, you gain 2 life.

, , Sacrifice this artifact: Return all enchantment cards from your graveyard to your hand.

, : Draw a card. Then discard a card unless you exile a historic card from your graveyard. (Artifacts, legendaries, and Sagas are historic.)

: Put the top card of your graveyard on the bottom of your library.

: Add one mana of any color.

, : Exile target card from a graveyard.

Whenever an artifact or enchantment is put into your graveyard from the battlefield, you gain 1 life.

When this creature dies, return another target artifact card from your graveyard to your hand.

, : Until end of turn, you may cast instant and sorcery spells from the top of your graveyard. If a spell cast this way would be put into a graveyard, exile it instead.