Interrupts and mana sources were removed from the game and combined into instants during the famous Sixth Edition rules change back in 1999
The gimmick is they are meant to be treats to give out on Halloween theyre small, cheap, and even the bag they come in looks like a multipack for candy instead of your normal Elite Trainer Box
Be it Iono (which will force both trainers to shuffle their hands on their decks and draw random cards) or the Red Card Item that will force the opponent to shuffle their hand and draw three cards
I dont see these synergies as being enough to put the card over something like Laelia, the Blade Reforged in Vintage Cube, but its not a non-starter in high-powered environments
My favorite Squirrel enhancers in white, however, are 1) Equal Treatment, which not only acts as defense but also can double the damage of an assaulting Squirrel attack, and 2) March of Souls, which neuters more impressive opposing creatures while actually improving your own little dudes by giving them flying
Expedition was the first set to feature the e-Reader cards, making these particularly sought after for collectors