Target creature gains flying until end of turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Sacrifice Hapless Researcher: Draw a card, then discard a card.

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

Lava Dart deals 1 damage to any target.
Flashback—Sacrifice a Mountain. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Mill two cards.
Draw a card.

Counter target sorcery spell.

Exile target card from a graveyard. Its owner creates a 1/1 white Spirit creature token with flying.

Sacrifice Dwarven Scorcher: Dwarven Scorcher deals 1 damage to target creature unless that creature's controller has Dwarven Scorcher deal 2 damage to them.

Flying

Sacrifice Cabal Trainee: Target creature gets -2/-0 until end of turn.

Sacrifice Benevolent Bodyguard: Target creature you control gains protection from the color of your choice until end of turn.

, Sacrifice Liberated Dwarf: Target green creature gets +1/+0 and gains first strike until end of turn.

Target creature loses flying until end of turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Exile X target cards from a single graveyard.

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

Any player may have Book Burning deal 6 damage to them. If no one does, target player mills six cards.

Discard a card: Prevent all damage that would be dealt to Trained Pronghorn this turn.

Enchant creature
Enchanted creature gets +2/+2 and can't attack.

When Nantuko Tracer enters, you may put target card from a graveyard on the bottom of its owner's library.

: Add one mana of any color that a land you control could produce.

Damage can't be prevented this turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Phantom Nomad enters with two +1/+1 counters on it.
If damage would be dealt to Phantom Nomad, prevent that damage. Remove a +1/+1 counter from Phantom Nomad.

Tap up to two target creatures.

Target creature gets +1/+0 and gains first strike until end of turn.
Draw a card.

Counter target spell unless its controller exiles all cards from their graveyard.
Draw a card.

When Wormfang Newt enters, exile a land you control.
When Wormfang Newt leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated. Its controller may exile three cards from their graveyard for that player to ignore this effect until end of turn.

Target nonblack creature gets -1/-1 until end of turn.
Threshold — If seven or more cards are in your graveyard, instead destroy that creature. It can't be regenerated.

When Ironshell Beetle enters, put a +1/+1 counter on target creature.

Prevent all damage that sources of the color of your choice would deal this turn.
Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

You gain 1 life for each creature you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +2/+2 and has ": This creature deals 1 damage to any target."

Flying
When Wormfang Drake enters, sacrifice it unless you exile a creature you control other than Wormfang Drake.
When Wormfang Drake leaves the battlefield, return the exiled card to the battlefield under its owner's control.

: Return two target cards from an opponent's graveyard to their hand. Destroy target artifact or enchantment.

Threshold — Anurid Barkripper gets +2/+2 as long as seven or more cards are in your graveyard.

Threshold — As long as seven or more cards are in your graveyard, Vigilant Sentry gets +1/+1 and has ": Target attacking or blocking creature gets +3/+3 until end of turn."