Mulligans
I looked at Pure Paladin lists that have been successfully played in high legend lately, removed flex cards and added the ones from the new set that fit best with the established game plan (go tall rather than wide and finish games with huge buffs or Horn of the Windlord ).
Deputization Aura + Keeper's Strength could heal you to full, but is probably too conditional, so I opted for Prismatic Beam (can save you if you’ve fallen behind on board, also face damage)