If left to evolve on its own, it stabilizes at generation 200 as a fairly sparse formation of 3 blocks and 2 blinkers.
The stairstep hexomino, if half of it is deleted after the two halves initially separate, forms a dove in 42 generations. The dove forms a lumps of muck sequence (although through a different predecessor) in what is effectively 20 generations. This is the basis of the p124 lumps of muck hassler; 2×(42+20) = 124.