Scareclaw

Scareclaw aims to end its turn with Scareclaw Tri-Heart sitting in the Extra Monster Zone. The moment Tri-Heart resolves its Link Summon, every face-up monster on the field flips to Defence Position, including the opponent's, and Tri-Heart itself becomes immune to the activated effects of any Defence Position monster it faces. With Scareclaw Astra on the field, Tri-Heart gains a separate attack for each differently named Defence Position Scareclaw monster present, and Scareclaw Belone ensures those attacks deal piercing damage. Primitive Planet Reichphobia compounds the pressure by stripping ATK and DEF from every opposing monster based on the total number of Defence Position monsters, and once that count reaches three it can destroy a card on the field once per turn.

Setting up Tri-Heart begins with Scareclaw Light-Heart, a Link-1 that searches Primitive Planet Reichphobia on arrival in the Extra Monster Zone. From there, the Level 3 members — Acro, Astra, and Belone — each self-Special Summon to a zone adjacent to or in the column of any Scareclaw already present, making it straightforward to assemble Link material. Scareclaw Reichheart accelerates the process further by searching any Scareclaw Spell or Trap on summon, and drawing an additional card if three or more Defence Position monsters are already on the field.

The deck's protection layer is layered across multiple cards rather than concentrated in one spot. Scareclaw Defanging makes Tri-Heart untargetable and indestructible by opponent's card effects, Scareclaw Sclash can negate an effect while Tri-Heart occupies the Extra Monster Zone, and Scareclaw Arrival can be banished from the Graveyard to shield a Scareclaw Link Monster from destruction, giving the established board genuine staying power through the opponent's response.