Mulligans
Combo Mulligans
The whole idea of this deck is to draw your cards which draw more cards so redscale is a good keep to tutor either nozdormu for a faster combo or silverwing to draw the holy spells, crystology helps thin your deck enough to where you could find the right cards. If you draw either molten or shirvallah you could always use finley to prep the combo to make sure you could get it off.
Theoretically, you could commit to 2 combos with this deck. Either Lynessa + Horn + Feast and Famine x 4 (you could also use divine brew for 10 extra damage) or Lynessa + a holywrath that costs 2 or less which could theoretically deal 47 damage. You could use finley to redo the combo or find different combo pieces while commiting to a combo.