So much value
Not only did it shuffle your whole graveyard back into your deck if it was put into there, but it provided an indestructible threat that blew up a problematic permanent when you cast it
It also gives your creatures haste for , which means you can get a lot of extra damage out of your early creatures and your dragons on the turn they come in
On one hand, it offers the player a free discard outlet on each of their upkeeps
Its not super-exciting, as you frequently want your sideboard interaction to be streamlined and efficient, particularly when combating problematic artifacts and enchantments
Warrant Solid removal spells are often overlooked because they arent particularly flashy, but in the modern era of Standard, finding the right removal package for a given metagame is very important, especially for reactive decks, so understanding the strengths and weaknesses of removal spells is important