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'Echo {6} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) {T}:...
'As this artifact enters, choose a creature type.
Creature spells of the chosen type cost {2} less to cast.
'{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.
'{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.
'{T}: Look at target player's hand.
'{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.
'Artifact, instant, and sorcery spells you cast cost {1} less to cast. {7}: If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone,...
'(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)
Exile all nonland permanents that aren't legendary.
'Flash Flying You may cast colorless spells and artifact spells as though they had flash. Whenever you cast a spell, if the amount of mana spent to cast that spell...
'{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.
'As this artifact enters, choose a creature type.
Creature spells of the chosen type cost {2} less to cast.
'{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.