Crusader of Endymion (Common) [BLC1-EN064-C]

This card is treated as a Normal Monster while face-up on the field or in the GY. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
• Once per turn: You can target 1 face-up card on the field that you can place a Spell Counter on; place 1 Spell Counter on it, and if you do, this card gains 600 ATK until the end of this turn.