For example, if you control Johann, Apprentice Sorcerer ("Once each turn, you may cast an instant or sorcery spell from the top of your library") and Promise of Aclazotz is on top of your library, you can cast Foul Rebirth, but not Promise of Aclazotz
Goblin Anarchomancer Goblin Anarchomancer is by far the best of the 2-mana Gruul cost reducing creatures
Table of Contents BounceEffects which return cards on the battlefield to their owner's hands, such as Unsummon
Rather than writing everything out, using multipliers, and doing all of the stuff we do for the article, you can simply add up the total value of all the mythics in the set (in this case, roughly $115), divide by the total number of mythics in the set (generally 15 but sometimes slightly different Throne of Eldraine has 15, which would give us $115.05 / 15 = $7.67) to get the average value of a mythic rare, and then finally multiply by the number of mythics you'll get from an average box (here's a cheat sheet: the average box as 4.5 mythics, 31.5 rares, 108 uncommons, and 360 commons)