North Star

, : You may cast a spell from your hand without paying its mana cost if it has the same name as a spell that was cast this turn.

You may spend white mana as though it were red mana.

As this artifact enters, choose a creature type.

: Add one mana of any color.

: The next spell of the chosen type you cast this turn can be cast as though it had flash.

This artifact enters tapped.

This artifact has all activated abilities of all lands on the battlefield.

You may spend mana as though it were mana of any color to pay the activation costs of this artifact's abilities.

: Add one mana of any color. When you next cast an artifact spell this turn, that spell gains sunburst. (If it's a creature, it enters with a +1/+1 counter on it for each color of mana spent to cast it. Otherwise, it enters with that many charge counters on it.)

, : You may exile a nonland card from your hand. You may cast that card for as long as it remains exiled. Put a charge counter on this artifact and note the type and amount of mana spent to pay this activation cost. Activate only if there are no charge counters on this artifact.

, Remove a charge counter from this artifact: Add this artifact's last noted type and amount of mana. Spend this mana only to cast the last card exiled with this artifact.