Beacons are significantly more common in diagonal symmetry than asymmetrically, so they can reform when hit, such as in the p26 pre-pulsar shuttle. The p24 shuttle, also having diagonal symmetry, contains a beacon, although this is incidental and not a catalyst.
A beacon can perform a snake-type catalysis in one of its two phases. Specifically, in the last generation before triggering the boat-bit reaction, the beacon is in the dense phase.
x = 18, y = 18, rule = B3/S23
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ HEIGHT 600 WIDTH 600 ZOOM 18 X -4 Y 4 GPS 15 AUTOSTART T 0 PAUSE 2 T 72 PAUSE 2 LOOP 73 ]]
Beacon is hit by two gliders and shifts by (4,4), inverts phase and emits two pi-heptominoes that become a half-bakery and pairs of ponds, boats and blinkers. Occurs in the exhaust of a seminatural p480 ark (Catagolue: here) (click above to open LifeViewer)