As Doom Cannon enters the battlefield, choose a creature type.

{3}, {T}, Sacrifice a creature of the chosen type: Doom Cannon deals 3 damage to any target.

Devoid (This card has no color.)

When Drowner of Hope enters the battlefield, create two 1/1 colorless Eldrazi Scion creature tokens. They have “Sacrifice this creature: Add {C}.”

Sacrifice an Eldrazi Scion: Tap target creature.

Flying

Exalted Dragon can’t attack unless you sacrifice a land. (This cost is paid as attackers are declared.)

Flying, vigilance

Threshold — As long as seven or more cards are in your graveyard, Wayward Angel gets +3/+3, is black, has trample, and has “At the beginning of your upkeep, sacrifice a creature.”

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

{1}, {T}, Sacrifice an artifact: Return target artifact you control to its owner’s hand.

Pentavus enters the battlefield with five +1/+1 counters on it.

{1}, Remove a +1/+1 counter from Pentavus: Create a 1/1 colorless Pentavite artifact creature token with flying.

{1}, Sacrifice a Pentavite: Put a +1/+1 counter on Pentavus.

Devoid (This card has no color.)

When you cast this spell, exile target artifact, enchantment, or land.

Reach

{2}{C}, Sacrifice a land: Return World Breaker from your graveyard to your hand. ({C} represents colorless mana.)

Trample

{3}{R}, Sacrifice an artifact: Bosh, Iron Golem deals damage equal to the sacrificed artifact’s mana value to any target.