Lae'zel's Acrobatics
Mass flicker has always been a white specialty: Eerie Interlude, Ghostway, and Semester's End all fold your creatures out and back to reset enters-the-battlefield triggers or dodge a wrath, then park the return on a delayed step and stop there. The d20 changes the math on the good half. Roll a 10 or higher and the creatures return once (firing every entry trigger), get exiled a second time, and blink back again on the delayed step (firing every entry trigger a second time). That is two full cycles of enter-the-battlefield value on a single four-mana instant, spread across the resolution and the delayed step rather than crammed into one moment. What complicates the pitch is that the doubling is the ceiling, not the baseline. A 9 or lower buys you an ordinary flicker: a serviceable response to removal or a board wipe, but a steep price for the effect a two-mana spell already provides. The design is honest about the gamble it is selling. It rewards the same board states any entry-trigger package rewards, but instead of charging a fixed premium for a fixed effect, it asks you to accept variance as the cost of the payoff. On the back half of the die, it is a value engine that resolves twice; on the front half, it is an overpriced protection spell you were glad to have anyway.
