Toploaders: For ultimate protection, especially for rare or high-value cards, clear regular toploaders (like the 3 x 4 clear regular toploaders 25ct for standard size) offer rigid support
Being able to pull whatever you need from the yard on top of your deck just before your draw phase is awfully good, especially in late game EDH
That design choice earned Teferi bans across multiple formats
Also they cab still do crazy ultra rares
For Mega Evolutions that usually have 200+ HP, the Lucky Ice Pop can make them unkillable
Even in a depowered deck, you can find Salt Marsh, Jwar Isle Refuge, Frost Marsh, and Secluded Glen to make the other colors in a deck built around The Mimeoplasm or something