As all Bosss Orders cards do the same thing and have the same printed text, it means that theres no inherent advantage, disadvantage, or disqualifying reason as to why an older copy of the card cant be used
At the top, right by the icon and app name, you should see the version number
There are some cards that make it so they can't play the spell
As a late game battle trick, it can win games
Legendary Planeswalker Teferi Rare Dmitry Burmak null/null NOT LEGAL Standard NOT LEGAL Future NOT LEGAL Historic LEGAL Timeless LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer LEGAL Modern LEGAL Legacy NOT LEGAL Pauper LEGAL Vintage NOT LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl NOT LEGAL Brawl NOT LEGAL Alchemy NOT LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern NOT LEGAL Predh Each opponent can cast spells only any time they could cast a sorcery
Firkraag, Cunning Instigator Firkraag, Cunning Instigator does a ton of work in any dragon deck that likes to get aggressive