Scroll of Isildur This seems like a solid early drop for blue decks to grind out some value to bridge into the mid-game
Its also a sweet infinite mana outlet in the command zone, which allows for on-the-spot wins once a combo is put together
Each of them has their pros and cons with regard to these effects
If the target creature is a token, the ability still triggers when it dies, but you won't return the token to the battlefield because it'll cease to exist when state-based actions are checked
Suddenly, Sparksmith killed itself, Pinpoint Avalanche took out your opponent's best creatures instead of your best creature, and that Mythic Proportions your opponent just cast decided to enchant Willbender instead of your opponent's Taunting Elf
If you're a Temur truther or a Sultai supporter, these are the Commander decks for you