Sacrifice a creature: Put a +1/+1 counter on Bloodflow Connoisseur.

Enchant creature
Enchanted creature gets +3/+3.
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Boneyard Wurm's power and toughness are each equal to the number of creature cards in your graveyard.

Trample
As long as Brawn is in your graveyard and you control a Forest, creatures you control have trample.

Haste

Whenever a nontoken creature is put into your graveyard from the battlefield, if Bridge from Below is in your graveyard, create a 2/2 black Zombie creature token.
When a creature is put into an opponent's graveyard from the battlefield, if Bridge from Below is in your graveyard, exile Bridge from Below.

Search your library for up to three creature cards, put them into your graveyard, then shuffle your library.

As Canker Abomination enters the battlefield, choose an opponent. Canker Abomination enters the battlefield with a -1/-1 counter on it for each creature that player controls.

When Cathodion dies, add .

As Cavern of Souls enters the battlefield, choose a creature type.
: Add .
: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Celestial Colonnade enters the battlefield tapped.
: Add or .
: Until end of turn, Celestial Colonnade becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.

Target player sacrifices a creature.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Counter target spell unless its controller pays for each card in your graveyard.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Conflagrate deals X damage divided as you choose among any number of targets.
Flashback—, Discard X cards. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flash
If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.

Enchant creature
Enchanted creature gets +1/+3.
: Return Conviction to its owner's hand.

Counter target noncreature spell. Its controller loses 2 life.

Creeping Tar Pit enters the battlefield tapped.
: Add or .
: Creeping Tar Pit becomes a 3/2 blue and black Elemental creature until end of turn and can't be blocked this turn. It's still a land.

Flying
When Crow of Dark Tidings enters the battlefield or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

Choose one —
• Destroy target creature with flying.
• Destroy target enchantment.