Where one player sees Beseech as copies 5-8 of Sheoldred, the Apocalypse in Standard, another cEDH player sees it as a toolbox tutor to find whatever answer or win condition the game needs
Specifically, the Elsa, Snow Queen promo card released at D23 Expo, Disneys annual convention, quickly rocketed to become one of the most valuable Lorcana cards even ahead of the card games full release
This opens up a ton of new options for existing Commander decks built around the mechanic, and will likely create a few new decks, too
Archangel of Thune puts a +1/+1 counter on each creature you control whenever you gain life, which means infinite life and infinite counters on creatures you have on the battlefield
So, you can play Umara Skyfalls as your extra land for Dryad of the Ilysian Grove, or off the top with Bolass Citadel but not off the top with Radha, Heart of Keld