Boromir, Warden of the Tower is a fresh white EDH staple that does double duty here, protecting your team and shutting down cascade shenanigans, pitch spells and any other free spells your opponents are trying to leverage
This is when any damage done to your creatures would be erased
If a player's scrying a lot, or using cards like Aid from the Cowl, Adventure Awaits, Adventurous Impulse or Collected Company, and there's a decent chance you'll be getting the leftover chaff rather than the really good, game-winning pieces
We can even start it with Mansherry
The Wizard offers a unique ability of being able to put any goblin from your hand into play at instant speed and can also grant protection from white, which is super relevant in EDH due to the massive prevalence of white board wipes in the format
Four mana is a massive ask in formats like Legacy, but removal that cannot be responded to, which occasionally blows up multiple things, is worth that cost