Raopia, Allobrox & Lion Mane leaks

Lizard Soldier, Raopia (V-BT01/0?? R)

AUTO [Vanguard/Rearguard Circle]: When your opponent's rearguard is retired during your turn, this unit gets Power +5000 until end of turn.

From the Belgium national tournament.

Herculean Knight, Allobrox (V-BT01/044 C)

CONT [Rearguard Circle]: If you have five rearguards, this unit cannot be attacked.

Lion Mane Stallion (V-BT01/0?? C)

CONT [Rearguard]: If you have four or more rearguards, this unit gets Power +3000.

From the Mexico Springfest.