A-Tier: Archetype Staples Cards: Blade Splicer, Restoration Angel, Hardened Scales, Master of the Pearl Trident, Svyelun of Sea and Sky, Nettlecyst, Thought Monitor, Priest of Fell Rites, Serra's Emissary, Sanctum Weaver, Sterling Grove, Sythis, Harvest's Hand, Thalia's Lieutenant, and Yawgmoth, Thran Physician Archetype staples are cards that you'll need to have in your collection but only if you want to play the specific deck that the card supports
Filtering lands off the top of your deck is really good
With prowess, that's fairly easy to do, and Kitsa has so many keywords stapled on it that its bound to be an appealing option for any UR prowess or tempo strategies in upcoming Standard formats
I know that @thecharizardauthorty has a few of those
Note that you don't have to exile to get a counter, it still happens with no graveyards