Database: card_games
Question: Which card name in the set 'Journey into Nyx Hero's Path' has the highest converted mana cost.
SQL: SELECT T1.name FROM cards AS T1 INNER JOIN sets AS T2 ON T2.code = T1.setCode WHERE T2.name = 'Journey into Nyx Hero''s Path' ORDER BY T1.convertedManaCost DESC LIMIT 1