Keyword: Flashback

Choose up to three target cards in graveyards. The owners of those cards shuffle them into their libraries. You gain 2 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Investigate. If this spell was cast from a graveyard, investigate twice instead. (Create a Clue token. It’s an artifact with “, Sacrifice this artifact: Draw a card.”)
Flashback

Create X 2/2 black Zombie creature tokens with decayed, where X is half the number of creature cards in your graveyard, rounded up. (A creature with decayed can’t block. When it attacks, sacrifice it at end of combat.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a 1/1 white Human creature token for each creature you control.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Light Up the Night deals X damage to any target. It deals X plus 1 damage instead if that target is a creature or planeswalker.
Flashback—, Remove X loyalty counters from among planeswalkers you control. If you cast this spell this way, X can’t be 0. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Surveil 3. (Look at the top three cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Exchange control of two target creatures you don’t control.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Then if there are three or more basic land types among lands you control, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

You gain 2 life, draw two cards, then discard two cards.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create X 2/2 black Zombie creature tokens with decayed, where X is half the number of creature cards in your graveyard, rounded up. (A creature with decayed can’t block. When it attacks, sacrifice it at end of combat.)
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Look at the top five cards of your library. You may put up to two permanent cards with mana value 5 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose up to two target creature cards in your graveyard. An opponent chooses one of them. Return that card to your hand. Return the other to the battlefield under your control. It gains haste. Exile it at the beginning of the next end step.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

This spell costs less to cast for each creature that died this turn.
Return target creature card from your graveyard to the battlefield.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Put a +1/+1 counter on target creature, then double the number of +1/+1 counters on it.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create two 3/3 green Insect creature tokens. You gain 2 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a 1/1 white Human creature token for each creature you control.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Return target card from your graveyard to your hand.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose up to two target creature cards in your graveyard. An opponent chooses one of them. Return that card to your hand. Return the other to the battlefield under your control. It gains haste. Exile it at the beginning of the next end step.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Look at the top two cards of target opponent’s library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.
Flashback

Each opponent sacrifices an artifact. For each artifact sacrificed this way, you create a Treasure token.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Exchange control of two target creatures you don’t control.
Flashback . This spell costs less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a red Elemental creature token with trample and “This token’s power and toughness are each equal to the number of instant and sorcery cards in your graveyard plus the number of cards with flashback you own in exile.”
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Look at the top three cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest into your graveyard.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever a creature or enchantment you control enters this turn, draw a card.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)