The fact that it combines both roles makes it the best option available for Dredge nowadays, even if we have to pay mana for recurring it and build the whole gameplan around it to make it happen
Appendage Amalgam Barrier of Bones Basilica Stalker Blood Operative Clandestine Meddler Dawnhand Dissident Desmond Miles Dogged Detective Doom Whisperer Faerie Dreamthief Fandaniel, Telophoroi Ascian Grave Researcher Grim Javelineer Heirloom Auntie Joo Dee, One of Many Kroble, Envoy of the Bog MACH-1, Swooping Scoundrel Namazu Trader Nightblade Brigade Purple Pentapus Sanguine Spy Seer of Stolen Sight Sinister Starfish Snarling Gorehound Spider-Man Noir Starlit Soothsayer Starving Revenant Twilight Diviner Umbral Collar Zealot Unshakable Tail Whispering Snitch Wreckage Wickerfolk Wretched Doll
Ungraded cards are very common, vary massively in their condition, and will only cost hundreds, rather than thousands, of dollars
But the prices above should give you a good idea of what's going to be the must-have chase cards
It's hard to try to understand it from 1 to 10, but since it's something you should keep in mind, I will only mention the parts related to this deck