Krosan Verge enters tapped.
: Add .
, , Sacrifice Krosan Verge: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

: Add .
As long as Riftstone Portal is in your graveyard, lands you control have ": Add or ."

: Add .
Threshold — : Nantuko Monastery becomes a 4/4 green and white Insect Monk creature with first strike until end of turn. It's still a land. Activate only if seven or more cards are in your graveyard.

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.

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Counter target sorcery spell.

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

Sacrifice a land: Target creature you control gains shroud until end of turn. (It can't be the target of spells or abilities.)

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.

: Return two target cards from an opponent's graveyard to their hand. Destroy target attacking creature.

Prevent all combat damage X target creatures would deal this 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.)

You may reveal a creature or land card you own from outside the game and put it into your hand. Exile Living Wish.

Search target player's library for up to three cards with flashback and put them into that player's graveyard. Then the player shuffles.

Cast this spell only during your turn.
Take an extra turn after this one if an opponent cast a blue spell this turn.

Return target creature card from your graveyard to your hand.
Threshold — Return that card from your graveyard to the battlefield instead if seven or more cards are in your graveyard.

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.

Target player shuffles up to two target cards from their graveyard into their library.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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

: Return target card from an opponent's graveyard to their hand. Put a +1/+1 counter on target creature.

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

Threshold — As long as seven or more cards are in your graveyard, Hunting Grounds has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on Soulcatchers' Aerie.
Bird creatures get +1/+1 for each feather counter on Soulcatchers' Aerie.