Some of these cards are Standard-legal, but only because previous printings are what put them in Standard (Monstrous Rage from Wilds of Eldraine is reprinted in MAR but is still banned in Standard, for example)
Any Goblins you have on hand will work, but there are several exceptional ones that make all the rest of your Goblins better
At a higher mana cost this might have been a bad card, but as a one mana instant it's good enough to warrant its restriction in Type 1
So why does the least consequential card in the whole pack the one that isn't even a game piece feel the need to announce "hey
Buying a booster box significantly increases your chances of pulling a wider variety of cards, including those elusive high-rarity ones
If the card was not in the pack, then I would consider Mickey Mouse - Steamboat Pilot or Mickey Mouse - Detective