As with regular Standard sets, well go over every single card that you can find in a Magic Draft and evaluate each card for Booster Draft and Sealed deck

Julius Jumblemorph Ego Erasure Feisty Spikeling Firdoch Core Fire-Belly Changeling Flock Impostor Formless Genesis Game-Trail Changeling Gangly Stompling Ghostly Changeling Gladewalker Ritualist Graveshifter Guardian Gladewalker Impostor of the Sixth Pride Irregular Cohort Littjara Littjara Glade-Warden Littjara Kinseekers Masked Vandal Maskwood Nexus Mirror Entity Mischievous Sneakling Mistform Ultimus Mistwalker Moonglove Changeling Moritte of the Frost Morophon, the Boundless Mothdust Changeling Mutable Explorer Nameless Inversion Omni-Changeling Omo, Queen of Vesuva Overlord of the Hauntwoods Personify Prideful Feastling Realmwalker Rooftop Percher Runed Stalactite Shapesharer Shields of Velis Vel Sizzling Changeling Skeletal Changeling Springleaf Parade Stalactite Dagger Taurean Mauler Three Tree Mascot Turtleshell Changeling Universal Automaton Unsettled Mariner Valiant Changeling

English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only English - Unopened - Normal Available in-Store Only
Dream Halls/Omniscience 6.5 Dream Halls is a bit like Mind Over Matter, it is one of those cards that just has combo written all over it and there are indeed many things you can do with it
I was kind of excited about this card until I realized the +1/+1 was until end of turn and not a +1/+1 counter
If you're interested in the full list of Secret Rares from Battle Partners, you can check them out here