Mishra

Double every point of damage every creature you control deals, combat and noncombat alike, permanently and for free: it is the kind of unconditional global modifier no actual card has ever been allowed to carry. There is no mana cost because there is no payment, no body to remove because there is no permanent at all. This persona was something a player brought to the table rather than a card drawn into play, an avatar from a series distributed through organized play in the late 1990s that handed each participant one of these identities, adjusting how much life and how many cards they began with and granting a static effect that ran for the entire game. The reason this doubling can exist at all is precisely that it lives outside the normal card economy: as a printed permanent it would warp any format it touched, but as a pregame condition attached to a single player in a casual side-event format, the rules can simply give it to you with no strings. What it represents is Magic experimenting with the game's starting state as its own design surface, not just the cards that flow through it: the idea that you could alter the opening conditions of a game rather than only what happens once it begins, a thread the game would return to much later in formats that adjust life totals and other pregame parameters.