1 "Scareclaw" monster or 1 "Visas Starfrost"
For this card's Link Summon, you can only use monsters in your Main Monster Zone as material. If this card is Link Summoned in the Extra Monster Zone: You can add 1 "Primitive Planet Reichphobia" from your Deck to your hand. If you control "Visas Starfrost": You can Special Summon this card from your GY. You can only use this effect of "Scareclaw Light-Heart" once per Duel.