Great default for readable customs and playtest cards
1999 update In September 1999, Wizards amended the Card Reprint Policy with the addition of an explicit Border-Color Policy
This way, you skip the turns with even numbers and maximize the turns with odd numbers of counters, and gain the advantage of two extra cards per turn
Don't forget that you can mill yourself too, letting you use Brain Freeze to fuel graveyard-based strategies or self-mill win conditions
Suspended Sentence: One of the recurring suspend spells, this one in black lets you keep killing a key creature every few times, and is a nice card only found here so far
Because Spirits were in white and we were trying to capture their ephemeral and sneaky qualities, we leaned a bit onto flickering (exiling a permanent for a certain duration of time and then returning it to the battlefield)