Weldfast Workshop

{t}: Choose a permanent type. Add {c}. Spend this mana only to cast a spell of the chosen type or activate an ability of a permanent or card of that type. You may pay 1 life. If you do, repeat this process except you can't choose a card type already chosen for this ability.
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"Find out what the world needs, then try to invent it. Even if you fail, you'll have invented a better world."
—Nehra, inventor