Forum:Assault Beast with no Assault Mode Activates

If I have "Assault Beast" in my hand and I have no "Assault Mode Activate" in my deck, can I still discard Assault Beast by his effect to search for Assault Mode Activate and just not find any or is it necessary to have an Assault Mode Activate in the deck in order to activate Assault Beast's effect? The idea is that I am able to just discard Assault Beast at will if I so choose.