A large, infinitely extensible p2 oscillator of the following form. Because it is a phoenix, it behaves identically in the Seeds rule (b2). (Courtesy of Jason Summers’ Seeds collection.)

ball pit.png

x = 13, y = 13, rule = s0/b2
4bo3bo$2bo2b3o2bo$b2o7b2o2$o4b3o4bo$bo2bo3bo2bo$bo2bo3bo2bo$bo2bo3bo2b
o$o4b3o4bo2$b2o7b2o$2bo2b3o2bo$4bo3bo!