The main phase, which lasts until the combat phase
Atemsis, All-Seeing I have fond memories of trying to win with Atemsis, All-Seeings ability in M20 drafts, then realizing my opponent just dies to a few 4-power swings first
Lindblum, Industrial Regency Theres no way to cut it
There are two key differences here that you can rely on
However, the whole having-to-wait-a-whole-turn-cycle-to-use-them is a real downside, just not one massive enough for me to knock one of the best Black cards of all time, both in and outside of cEDH
Similarly, each time a Horror creature, Nightmare creature, enchantment creature, or face-down creature you control attacks an opponent, that opponent become afraid of you for the rest of the turn, regardless of what happens to the creature that attacked