The problem is that it's typically a bad strategic decision
Its in a similar design space to commanders that give your creatures blitz or something like it, though you're never down the creature card
Crew 3 4/5 Illustrated by Tracy Yardley Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
tracking of players' inventories, reprints across multiple sets, and card styles creates an interconnected web of systems that were built for a very different world than the one we live in now
(Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) Legendary Creature - Advisor Dwarf Goblin Dark-Dwellers Menace (This creature can't be blocked except by two or more creatures.) When this creature enters, you may cast target instant or sorcery card with mana value 3 or less from your graveyard without paying its mana cost
Personally, if I want a specific card, i'll just grab it instead of buying and ripping boosters to get it