Picking a level: use the party's average character level for a fair fight. Skew a level or two higher if the group is well-optimized, has more magic items than usual, or you want a real scare; skew lower if it's a rough night for the party (someone's down a healer, low on surges, etc.). Difficulty: Easy suits a warm-up or a fight you expect them to win handily; Standard is a fair, resource-draining fight; Hard should be reserved for a climactic moment — expect real risk and higher surge/resource spend.
Leave all boxes in a category unchecked to include every option for that category.
Monster names are inspired by the 4e Monster Manuals; level, role, and stats were assigned for this tool and are not verified against a printed stat block.
Gold: 0 gp
Mundane gear only — this project doesn't have a magic item catalog (yet).