Hunting Numbers: Best Number Xyz for Umbral Horror

Beyond the Brave gave Umbral Horror new support, and you now want an Extra Deck full of Numbers. The deck's Field Spell, Barian's Seventh Untopia, caps both players at two Special Summons from the Extra Deck per turn, Number monsters excluded. Number 104: Masquerade V searches your Barian's Spells and Traps, and Barian's Hope revives it from the GY.

You get 15 Extra Deck slots, so each Number has to earn its place. The picks below either extend your combo or answer a threat you will meet in Ranked.