Fire Imp OR Personal Tutor For today's #10 spot in our countdown, which do you like better
As a player you have a small pool of cards, typically this is either 45 as with Draft or 84 cards in a Sealed prerelease, and its your task to create a deck out of that pool
Notice how it just says "other card's effects", meaning it's not specific about what cards its unaffected by, just that it's unaffected by other card's effects in general
Smothering Tithe mixes taxing your opponents with Token generation, allowing for an explosive amount of mana generation in a color that is notorious for otherwise taking a while to get going
Scaling with the amount of Poison Counters on opponents, Phyrexian Swarmlord can create oodles of Phyrexian Insect Tokens
Losing to someone who has 3 Raigeki spells in their deck while the player is only limited to one does not make the most sense.