Armin Arlelt (Colossal Titan)

If you have four or more yellow characters without [Rumbling] affinity whose card names are unique on your field, reduce this card's required energy by while anywhere other than on your field. The number of cards you can place onto your front line is reduced by one. <Armin Arlelt> Switch to active. May move to the front line. (When this character attacks and wins a battle, deal 1 damage to your opponent.) Choose up to one character with 6000 or less BP on your opponent's front line and sideline it.

Trigger

Add this card to your hand, or if you have the required energy, perform Raid with it.