Metrognome

When this creature enters, create a 1/1 colorless Gnome artifact creature token.

Whenever one or more artifact creatures you control die, draw a card. This ability triggers only once each turn.

, : Create a 1/1 colorless Thopter artifact creature token with flying.

Whenever you cast a spell, put a 0/1 colorless Egg artifact creature token onto the battlefield.

Whenever an Egg you control is put into a graveyard from the battlefield, destroy target artifact or creature.

If a spell or ability an opponent controls causes you to discard this card, put it onto the battlefield with two +1/+1 counters on it instead of putting it into your graveyard.

You may cast this card from exile.

When this creature becomes the target of a spell or ability an opponent controls, exile this creature.

When this creature dies, create a 1/1 colorless Thopter artifact creature token with flying.