That will help a great deal
You potentially can also use the front side of Invasion of Shandalar to return massive finishers like Portal to Phyrexia or Atraxa to your hand, flip Invasion of Shandalar, and drop them into play on future turns, which sounds powerful if you can find the time to get it set up
Serra's Sanctum - an obvious inclusion for any white deck with an enchatment focus
With other U/W and Esper Control builds, I felt really miserable about playing post-sideboard games when my opponents were overloaded on Mistcutter Hydra, Stormbreath Dragon, and Sire of Insanity
(2024-09-20) If an effect says to set an opponent's life total to a number that's higher than their current life total, that player's life total won't change
Altered cards must always be listed with photos or scans to clearly show the modification made to the original print