All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}."

When this creature dies, return another target artifact card from your graveyard to your hand.

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

If a player would begin an extra turn, that player skips that turn instead. If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.

All permanents are artifacts in addition to their other types. All cards that aren't on the battlefield, spells, and permanents are colorless. Players may spend mana as though it were mana of any color.

Imprint — When this creature enters, you may exile a card from your hand face down. When this creature dies, turn the exiled card face up. If it's a creature card, put it onto the battlefield under your control.