The most valuable card illustrated by Masako Tomii is Yveltal (Paradox Rift) at $30, ahead of Gloom ($20) and Elgyem ($12).
Value counts each card once at its highest-priced printing. The homepage leaderboard additionally requires a priced rarity cohort, so its totals run slightly leaner.
By TCGplayer market price, the most valuable Masako Tomii card is Yveltal (Paradox Rift) at $30, followed by Gloom (Obsidian Flames) $20, Elgyem (Black Bolt) $12, Noibat (Prismatic Evolutions) $2, Gengar (Perfect Order) $1. Prices are TCGplayer market for raw copies (any condition) and refresh daily.
TickerMint tracks 17 Pokemon cards illustrated by Masako Tomii across 19 printings, with a combined market value of $67 counting each card once at its priciest printing.