The card advantage is astronomical, and the politics with copies can get downright nasty
You get to apply some pressure with this body and when it eventually dies it will already have done its job and now youve got a little saproling token as a compensation
Umori is a case where doing so is the clear best option, letting you easily access its overstatted, cost-reducing goodness without nerfing your deck with a lack of variety in card types
Additionally, Limited decks don't tend to run multiple copies of a card, so this card was seldom played during Limited playtesting
That alone is powerful, but Lorehold also lets you discard a card to draw a card on each of your opponents turns so you can trigger this ability every single turn in four-player Commander
Najeela, the Blade-Blossom 4-7+ A slightly more vulnerable version of Hanwier Garrison that scales dangerously well with warrior subtype cards