Hey so uh, the Wyrm Claw spellheart specifies that it can only summon Metallic dragons with the Summon Dragon activation but... There are no metallic dragons for the level 12 version's 5th level Summon Dragon. Only the Greater spellheart, which casts 7th-level Summon Dragon, can summon a Young Brass Dragon (the lowest level metallic dragon I found on nethys).
