I've been fiddling with a Brenn-Chalice deck since Chalice seemed like a natural fit for Brenn (it buffs him out of range of Torch/Hailstorm while already running a decent number of spells including a payoff card in Channel the Tempest). I included a bunch of random legendary one-offs since I had them laying around. Then I kept opening Kennelmaster so I kept adding more of them.
The deck is definitely not optimal since I've only played it in Gauntlet and I'm being really stingy with my shiftstone this close to Set 4's release (the powerbase probably needs work), but Set 4 is already looking to shake things up with the Time merchant (being able to fetch Chalice and Find the Way to support both of the deck's plans), Rika, and whatever else happens to be in the set.