This rule is interesting, nonexplosive, and supports the glider and the ant, along with many other ships. The R is a common methuselah which can be made in 2G:

`x = 11, y = 6, rule = B3/S23-c4q`

bo$2bo$3o$8bobo$8b2o$9bo!

Misc:

`x = 79, y = 37, rule = B3/S23-c4q`

49bo7bo$48bobo5bobo$49bo7bo4$3o4b3o4b3o4b3o4b3o18b3o3b3o12b3o3b3o$o6b

3o4bo2bo3bo2bo3bo2bo17bobo3bobo12bobo3bobo$bo4bo7bo6bo6bo20b3o3b3o12b

3o3b3o$7bo6bo6bo3bo2bo3bo$15bobo3bo6bo3bo$22bobo3bo$29bobo3$49bo7bo$

48bobo5bobo$49bo7bo9$14b2ob2o$13bobobobo$13bobobobo$14bo3bo4$14bo3bo$

13bobobobo$13bobobobo$14b2ob2o!

R-to-block, unusual

`x = 4, y = 9, rule = B3/S23-c4q`

2b2o$2b2o5$bo$3o$2bo!

May other life oscs work:

`#C these aren't the only ones of course`

x = 29, y = 18, rule = B3/S23-c4q

4b2o4bob2o4b2o$3bobo4b2obo4bobo$3bo16bo$2obo16bob2o$2obobob10obobob2o$

3bobo12bobo$3bobo12bobo$4bo3bo6bo3bo$11b2o2$11bo$9bo3b4o5b2obob2o$9bo

3bo11bo$9bo12bo5bo$12bo10b5o$10b2o2$22b3ob3o!

This appears to produce an obliquely-traveling awful head:

`x = 7, y = 4, rule = B3/S23-c4q`

2bo$2obobo$2o3b2o$2o!