Myrsmith

Text:

Whenever you cast an artifact spell, you may pay . If you do, create a 1/1 colorless Myr artifact creature token.

Rulings:

• 8/7/2020 An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
• 8/7/2020 While resolving Myrsmith’s ability, you can’t pay more than <img src="/Handlers/Image.ashx?size=small&amp;name=1&amp;type=symbol" alt="1" align="absbottom" /> to get more than one Myr.