> 7-7-7 (Shuffle x Back)
This was attempting to do something similar to the scry mulligan we used at Pro Tour Magic Origins, but in a way that was more powerful. Basically, each time you mulligan you draw up to seven, but get rid of cards that you can't use (down to the appropriate smaller hand size per mulligan), thereby increasing the chances that you will have a reasonable hand.
What we liked: This seemed pretty close to right power level for Limited, but had some problems. You generally ended up shuffling your most expensive card back, but if it wasn't obvious, then the decision on wh…