Heroic Call

Special Summon 1 Warrior monster from your hand or GY, but if it is a non-"Heroic" monster, it cannot attack, also its effects are negated. If your LP are 500 or less: You can banish this card from your GY, then target 1 face-up monster you control; it gains 500 ATK for each "Heroic" card you control and that is attached to monsters you control. You can only activate 1 "Heroic Call" per turn.