One of the most common methods for dealing with problematic permanents in EDH involves using removal spells, like Swords to Plowshares or Beast Within
Jin-Gitaxias, Core Augur Jin-Gitaxias, Core Augur shreds your opponents' hand sizes to zero while drawing seven cards at the end of every turn
If this Pokemon has at least 1 extra Psychic Energy attached to it (in addition to this attack's cost), each player draws cards until they have 7 cards in their hand
1 Prodigy's Prototype
While card types like enchantments or artifacts do help to minimize Umori, the Collector's drawback since there are artifact / enchantment creatures and removal spells, making it possible to make a semi-functional deck with Umori as its companion, even in these cases, a decent body that offers a slight discount on your spells doesn't seem worth the effort
And graveyards just arent all that important in this iteration of Standard