The first is a clockwork creature, that gets stronger then generates another and resets.
They Enter play as 1|1s.
At the end of each player's turn there is a clock advancement and a stat increase starting with defense. The visual part is the clock will go from 12 to 1 o'clock, and the creature will gain +0|+1. When it goes to 2 o'clock at the end of opponent's turn, it gains +1|+0. This alternating stat increase will end when clock returns to 12, and 2 1|1s will take its place.
BB will trigger the 2 1|1s or anything that pushes creature at or over either of the end cycle stats, (I think 6|6 for unupped).
Rewind will simply return or keep creature to/at 1|1(set clock back to 12.) This will not trigger the 2 1|1s.
