We've made a few changes to the feedback form on the New Features and Suggestions page to make your feedback even more valuable.

Update 1/26:

• I've added additional colorless mana options to the MTG Card Maker and the Planeswalker Maker. Eldrazi and Karn cost-level creatures should now be easier to make!
• Fixed a bug that was adding an extra space to Activated Abilities without mana costs.

We've seen lots of great custom MTG cards out there this week, keep up the awesome ideas!