No. That is not the 'truth'. At the moment, it is 'nothing more than an assumption without an argument'.
[ACT](VC) Limit Break 4 (This ability is active if you have four or more damage):[Choose one of your «Great Nature» rear-guards, and lock it] Choose up to two of your «Great Nature» rear-guards, and until end of turn, those units get [Power]+4000 and "[AUTO](RC):At the end of your turn, retire this unit." "[AUTO]:During your end phase, when this unit is put into the drop zone from (RC), call this card to an open (RC).". (The locked card is turned face down, and cannot do anything. It turns face up at the end of the owner's turn.)
[CONT](VC):If you have a card named "School Hunter, Leo-pald" in your soul, this unit gets [Power]+2000.
[CONT](VC/RC): Lord (If you have a unit without a same clan as this unit, this unit cannot attack)