You can build a black-heavy Zombie deck, dedicate your deck to madness and mayhem (possibly with a Vampire subtheme or a blue splash for Select a symbol to see contents of the Innistrad planar module
Though undoubtedly strong, this card is probably a bit too slow to be main-deckable in Modern: three mana for the sword, two more to actually equip it, and then you have to get through to deal combat damage as well
Just In Time is an action card costing 3 ink that allows characters of 5 ink or less to be played for free, essentially using two cards instead of one to reduce the ink cost
Examples of Connive Cards Worth Playing Several connive cards have proven themselves across multiple formats

Advanced Search Sets Random Syntax Aerie Ouphes Altar Golem Antler Skulkin Archon of Justice Ashling, the Extinguisher Balefire Liege Ballynock Trapper Battlegate Mimic Belligerent Hatchling Bloodied Ghost Bloom Tender Cache Raiders Canker Abomination Cinder Pyromancer Cold-Eyed Selkie Crackleburr Crag Puca Creakwood Ghoul Creakwood Liege Deathbringer Liege Deity of Scars Desecrator Hag Divinity of Pride Dominus of Fealty Doomgape Dream Thief Duergar Assailant Duergar Cave-Guard Duergar Hedge-Mage Duergar Mine-Captain Duskdale Wurm Evershrike Fang Skulkin Figure of Destiny Flickerwisp Gilder Bairn Glen Elendra Archmage Grazing Kelpie Groundling Pouncer Gwyllion Hedge-Mage Hag Hedge-Mage Harvest Gwyllion Hatchet Bully Hateflayer Hearthfire Hobgoblin Heartlash Cinder Hobgoblin Dragoon Hoof Skulkin Hotheaded Giant Impelled Giant Indigo Faerie Jawbone Skulkin Kithkin Spellduster Kithkin Zealot Lingering Tormentor Loyal Gyrfalcon Marshdrinker Giant Merrow Bonegnawer Merrow Levitator Mindwrack Liege Murkfiend Liege Necroskitter Needle Specter Nettle Sentinel Nightsky Mimic Nip Gwyllion Nobilis of War Noggle Bandit Noggle Bridgebreaker Noggle Hedge-Mage Noggle Ransacker Noxious Hatchling

What's the best misprint you have seen in the wild