Doom Cannon

As this artifact enters, choose a color and a creature type.

, : Create a 2/2 creature token of the chosen color and type.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

As this artifact enters, choose a creature type.

Creatures you control of the chosen type get +2/+2.

This artifact enters tapped.

, Sacrifice this artifact and any number of creatures you control: This artifact deals X damage to any target, where X is the total power of the creatures sacrificed this way, then exile this artifact and those creature cards.

Sunburst (This artifact enters with a charge counter on it for each color of mana spent to cast it.)

, Sacrifice this artifact: It deals damage equal to the number of charge counters on it to any target.

When this artifact enters, it deals 5 damage to target creature.

, Discard this card: Destroy target artifact.

Flash

When this artifact enters, it deals 6 damage to target creature an opponent controls.

Cycling (, Discard this card: Draw a card.)