Foundry Inspector

Text:

Artifact spells you cast cost less to cast.

Rulings:

• 9/20/2016 If an artifact spell has <img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /> in its mana cost, choose the value for X first, and then reduce the cost by <img src="/Handlers/Image.ashx?size=small&amp;name=1&amp;type=symbol" alt="1" align="absbottom" />. For example, an artifact that costs <img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /> with X chosen as 4 costs <img src="/Handlers/Image.ashx?size=small&amp;name=3&amp;type=symbol" alt="3" align="absbottom" /> to cast if you control Foundry Inspector.
• 9/20/2016 Once a player has announced an artifact spell, no player may take actions to try to remove Foundry Inspector from the battlefield before that spell’s cost is locked in.