Menace is a great ability
That being said, the two cards are at a similar power level and are often found in the same deck
Those all can synergize fine together, you'll just need to find the right balance when deckbuilding
If you just want to crack packs with an eye towards value, Modern Horizons 2 is the best option because of how many powerful and expensive cards it contains, but you can still get burned if you open too many junk rares

Advanced Search Sets Random Syntax Release date: 2008-02-01 Ballyrush Banneret Battletide Alchemist Burrenton Bombardier Burrenton Shield-Bearers Cenn's Tactician Changeling Sentinel Coordinated Barrage Daily Regimen Feudkiller's Verdict Forfend Graceful Reprieve Idyllic Tutor Indomitable Ancients Kinsbaile Borderguard Kinsbaile Cavalier Kithkin Zephyrnaut Meadowboon Mosquito Guard Order of the Golden Cricket Preeminent Captain Redeem the Lost Reveillark Shinewend Stonehewer Giant Stonybrook Schoolmaster Swell of Courage Wandering Graybeard Weight of Conscience Declaration of Naught Dewdrop Spy Disperse Distant Melody Fencer Clique Floodchaser Grimoire Thief Ink Dissolver Inspired Sprite Knowledge Exploitation Latchkey Faerie Merrow Witsniper Mind Spring Mothdust Changeling Negate Nevermaker Notorious Throng Research the Deep Sage of Fables Sage's Dousing Sigil Tracer Slithermuse Stonybrook Banneret Stream of Unconsciousness Supreme Exemplar Thieves' Fortune Vendilion Clique Waterspout Weavers Auntie's Snitch Bitterblossom Blightsoil Druid Earwig Squad Fendeep Summoner Festercreep Final-Sting Faerie Frogtosser Banneret Maralen of the Mornsong Mind Shatter Moonglove Changeling Morsel Theft Nightshade Schemers Noggin Whack Offalsnout Oona's Blackguard

Damage wears off, and "this turn" and "until end of turn" effects end.) Instant Primordial Mist At the beginning of your end step, you may manifest the top card of your library