Spells
One spell from your Tier or lower will be present in the Tavern on each refresh. The cost to buy them varies from 1 to 7 Gold. While some spells like Unmasked Identity can have a huge impact on the outcome of your next fight, cheaper ones like Tavern Coin or Careful Investment are a good alternative to rolling your last couple of Gold away, at the end of your Tavern phase.
There is also one specific spell for each minion type (for example Guzzle the Goop), which will only be available if the minion type is active for the given Battlegrounds game.
There a few spells exlusive to Duos mode (like Portal in a Bottle) which support the Pass mechanic. The appeareance rate of these spells is increased by 50%.
Fortify
Pointy Arrow
Tavern Coin
Tavern Dish Banana
Them Apples
Enchanted Lasso
Recruit a Trainee
Careful Investment
Lantern Light
Chef's Choice
Cry Foul
Leaf Through the Pages
Recruitment Program
Shiny Ring
Hasty Excavation
Strike Oil
Fleeting Vigor
Overconfidence
Reckless Investment
Robust Evolution
Tricky Trousers
Catch!
Staff of Enrichment
Echoing Roar
Natural Blessing
Planar Telescope
Boon of Beetles
Gem Confiscation
Ritual of Growth
Spitescale Special
Toxic Tumbleweed
Brann's Blessing
Contracted Corpse
Defender's Rites
Hired Headhunter
Misplaced Tea Set
Portal in a Bottle
Scavenge for Parts
Titus' Tribute
Cloning Conch
Guzzle the Goop
Suspicious Stimulant
Plunder Seeker
Fluidity
Butchering
Armor Stash
Buddy Up
Channel the Devourer
Dreamer's Embrace
Primal Staff
Unmasked Identity
Upper Hand
Corrupted Cupcakes
Jaws of Fate
Golden Touch
Top of the Beanstalk
Eyes of the Earth Mother
Lost Staff of Hamuul
Perfect Vision
Saloon's Finest
Azerite Empowerment
Sacred Gift