It can either draw you a card and provide an opponent with a 4/4 (which the Datasmith blocks handily due to protection), or it can draw an opponent a card and make you a 4/4
When you use the card draw mode Ob goes to a healthy 6 loyalty while Jace sticks on 3

Advanced Search Sets Random Syntax Alexios, Deimos of Kosmos Archwing Dragon Axebane Ferox Beifong's Bounty Hunters Bloodsworn Steward Cactusfolk Sureshot Cadric, Soul Kindler Caesar, Legion's Emperor Caldaia Guardian Canoptek Tomb Sentinel Captivating Crew Charging Cinderhorn Creepy Puppeteer Deathless Knight Dynaheir, Invoker Adept Embereth Paladin Embodiment of Fury Eumidian Wastewaker Exquisite Huntmaster Falkenrath Aristocrat Fathom Fleet Swordjack Fire-Field Ogre Fireflux Squad Fleetfoot Dancer Giant Solifuge Goblin Assault Team Goldnight Castigator Graywater's Fixer Hero of Oxid Ridge Hotheaded Giant Howling Galefang Iroh, Dragon of the West Jaded Sell-Sword Lava Hounds Lavaleaper Lightning Elemental Manaform Hellkite Mardu Siegebreaker Questing Beast Rampaging Raptor Rekindling Phoenix Saheeli, Radiant Creator Scorch Rider Shaman of the Great Hunt Sycorax Commander The Beamtown Bullies The Boulder, Ready to Rumble The Regalia Thundermane Dragon Ulvenwald Oddity Vaultbreaker Vengevine Wartime Protestors Wave of Rats Yarus, Roar of the Old Gods Zevlor, Elturel Exile omer, Marshal of Rohan

I think Kroxa is one of the most underrated cards in Pioneer
Well, assuming nothing gets banned
You can directly target the enemy instead of the area but they might move next to the caster and hit/KO them with their own attack