It's semi-restrictive in its targets as far as 1-mana counters go, but can very effectively shut down control decks
Its a strong choice for decks built around Clues, Treasure, or any engine that keeps tokens flowing
When you can pack a load of narrow tools into your sideboard and have access to them game one without any risk of drawing them and having dead cards Living Wish is a little oppressive and outclasses Demonic Tutor
It's the cheapest creature with undying, so its a must-have in a lot of strategies to use it, like Yawgmoth in Modern
Whenever one or more Assassins you control deal combat damage to a player, exile up to one target Assassin card or card with freerunning from your graveyard
Discard spells are notoriously powerful, and Thoughtseize is arguably the best of them all