Based on the Borg cards we've seen so far, it's fair to assume that assimilation will play a big role in this deck

Anara & Ardenn Equipment Ardenn, Intrepid Archaeologist | Illustration by Jason Rainville Commanders (2) Anara, Wolvid Familiar Ardenn, Intrepid Archaeologist Planeswalker (1) Creatures (19) Armored Skyhunter Avacyn's Pilgrim Brass Squire Cloudsteel Kirin Danitha Capashen, Paragon Danitha, Benalia's Hope Elvish Mystic Foundry Inspector Fyndhorn Elves Honored Knight-Captain Lion Sash Llanowar Elves Puresteel Paladin Reclamation Sage Relic Seeker Sram, Senior Edificer Stonehewer Giant Taj-Nar Swordsmith Tanuki Transplanter Instants (10) Blacksmith's Skill Emerge Unscathed Enter the Avatar State Family Reunion Hunter's Insight March of Otherworldly Light Path to Exile Sejiri Shelter Swords to Plowshares Valorous Stance Sorceries (9) Cultivate Day of Judgment Doomskar Farseek Kodama's Reach Nature's Lore Open the Armory Rishkar's Expertise Sublime Exhalation Enchantments (3) Flaming Fist Kenrith's Transformation Quest for the Holy Relic Artifacts (19) Arcane Signet Belt of Giant Strength Blackblade Reforged Champion's Helm Colossus Hammer Conqueror's Flail Inquisitor's Flail Loxodon Warhammer Mask of Avacyn Mask of Memory Nettlecyst Sanctuary Blade Sol Ring Swiftfoot Boots Talisman of Unity Thran Power Suit Whispersilk Cloak Worldslayer Zephyr Boots Lands (37) Ash Barrens Blossoming Sands Brushland Canopy Vista Cascading Cataracts Command Tower Darksteel Citadel Evolving Wilds Forest x7 Fortified Village Mosswort Bridge Plains x12 Radiant Grove Razorverge Thicket Scattered Groves Selesnya Sanctuary Sungrass Prairie Sunpetal Grove Temple of Plenty Thornglint Bridge This deck partners Ardenn, Intrepid Archaeologist with Anara, Wolvid Familiar to create a powerful Voltron combo built around stacking a ton of equipment onto one of your commanders and getting in for plenty of damage

Up the Beanstalk Up the Beanstalk would be playable even if it didn't draw you a card when it enters
Maybe Seths approach is right
You can discard or cast early burn and pump spells to threaten opponents, trusting in Tersa to finish the game with those spells cast from your graveyard
Shalai and Hallar is one of the team-up cards Ive seen the most excitement for