You may activate the loyalty abilities of Urza, Planeswalker twice each turn rather than only once.

+2: Artifact, instant, and sorcery spells you cast this turn cost less to cast. You gain 2 life.

+1: Draw two cards, then discard a card.

0: Create two 1/1 colorless Soldier artifact creature tokens.

−3: Exile target nonland permanent.

−10: Artifacts and planeswalkers you control gain indestructible until end of turn. Destroy all nonland permanents.

: Add .

: Add . Activate only once and only if you control an Urza's Mine, an Urza's Power-Plant, and an Urza's Tower.

, : Head to AskUrza.com and click Urza's Fun House.

: Add . If you control an Urza's Mine and an Urza's Tower, add instead.

: Add . If you control an Urza's Mine and an Urza's Power-Plant, add instead.