Legendary Artifact — Powerstone // Legendary Planeswalker — Urza

When The Mightstone and Weakstone enters the battlefield, choose one —
• Draw two cards.
• Target creature gets -5/-5 until end of turn.
{T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells.
(Melds with Urza, Lord Protector.)

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 {2} 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.

Artist(s): Ryan Pancoast