Once it resolves, it will remain in effect until the game ends, Ride the Shoopuf's leaves the battlefield, or some subsequent effect changes its characteristics, whichever comes first
Blink Pack #4 | Jumpstart 2022 Creatures (8) 1 Brightmare 1 Cavalry Drillmaster 1 Distinguished Conjurer 1 Inspiring Overseer 1 Pierce Strider 1 Rambunctious Mutt 1 Seller of Songbirds 1 Wispweaver Angel Instants (1) 1 Flicker of Fate Sorceries (1) 1 Settle Beyond Reality Enchantments (1) 1 Faith's Fetters Artifacts (1) 1 Panharmonicon Lands (8) 7 Plains 1 Thriving Heath The final pack might as well be the SaffronOlive special, as while it lacks a copy of Preston, it instead has Panharmonicon
If theres too much countermagic, too little ramp, too many big threats and not enough ways to survive long enough to play them maybe your commander needs a critical mass of a card effect you thought you had, but didnt
A Sepulchral Primordial While its more of a Commander card, theres nothing wrong with a 5/4 intimidate with your opponents best graveyard creature as part of the deal
