Most of the best colorless cards cost a lot of mana to play, and Zhulodok gives them all double cascade, meaning they'll bring along two other spells for free, giving you three spells for the price of one
Watt - Pittsburgh Steelers 133 Isaiah Likely - Baltimore Ravens 134 Chris Godwin - Tampa Bay Buccaneers 135 Charles Woodson - Green Bay Packers 136 Leonard Williams - Seattle Seahawks 137 Byron Murphy - Minnesota Vikings 138 Kyren Williams - Los Angeles Rams 139 Mike Gesicki - Cincinnati Bengals 140 Ty Johnson - Buffalo Bills 141 Travis Etienne Jr
He costs four in Azorius colors at legendary and then with a 2/3 body
Signets & Talismans The cycle of 2-color signets and talismans are go-to accelerants for pretty much any deck, especially ones that dont have access to green for Rampant Growth effects
Notably, opponents can't try to remove the permanent you wish to sacrifice
Herald of Amity Saffgor: You cast the Aura, so cast triggers apply, and 8 is a deep pool to potentially rip an Eldrazi Conscription from