Oracle

Enchantment 

Whenever an artifact enters the battlefield under your control, you may pay 1. If you do, each opponent loses 1 life and you gain 1 life.
1B, Sacrifice Underhanded Designs: Destroy target creature. Activate this ability only if you control two or more artifacts.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

9/20/2016
You can pay 1 only once each time Underhanded Designs’s triggered ability resolves. You can’t pay more to cause your opponents to lose more life.

9/20/2016
The number of artifacts you control is checked only as you activate Underhanded Designs’s last ability. It’s not checked again as it resolves.

9/20/2016
In a Two-Headed Giant game, Underhanded Designs’s first ability causes the opposing team to lose a total of 2 life. You still gain only 1 life.

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