Sacrifice a creature: Add {C}{C}.

{1}, {T}, Sacrifice this artifact: Add one mana of any color. Draw a card.

{1}, {T}, Sacrifice this artifact: Add one mana of any color. When this artifact is put into a graveyard from the battlefield, draw a card.

When this artifact enters, draw a card. {2}: Add one mana of any color.

When this creature enters, you may search your library for a Myr card, reveal it, put it into your hand, then shuffle.

When this land enters, scry 1. {T}: Add {C}. {1}, {T}: Add one mana of any color.

({T}: Add {G}.)

{T}: Add {C}. {3}, {T}, Sacrifice this land: Return a creature card at random from your graveyard to your hand.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

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

Breath Weapon deals 2 damage to each non-Dragon creature.

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Whenever an artifact is put into a graveyard from the battlefield, you may gain 5 life.

{1}, Sacrifice an artifact or creature: This enchantment deals 1 damage to any target.

Changeling (This card is every creature type.) When this creature enters, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

{T}, Sacrifice this artifact: Exile target player's graveyard. When this artifact is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

Choose one — • Destroy target artifact. • Destroy target creature with defender. • Smash to Dust deals 1 damage to each creature your opponents control.