Youd generally prefer regular card draw over looting, but looting still gives you the chance to get rid of some dead cards in your hand, so I think we can all agree that Vaultbreaker is a solid dash creature
Facilier Charletan, Horace No-Good Scoundrel, Jasmine Disguised, Elsa Ice Surfer, and Simba Future King Uncommons: Dragon Fire, Smash, and Prince Phillip Dragon Slayer Rare or above: Dr
Focus on more generating infinite mana with Drake + Emiel or Drake + Displacer or Dockside + Emiel, then dump the mana into drawing via Omnath into a kill card such as Terror of the Peaks
Spellcaster's Command - 1st
These two are useful against Halqifibrax boards, but not optimal when compared to Lightning Storm, Evenly Matched, or Dark Ruler No More
Diving into the Trainer cards, we end up with useful staples such as a set of Iono, and two copies of Arven, Bosss Orders, and Professors Research