Double
| Double | |
|---|---|
| Keyword Action | |
| Introduced |
Fifth Dawn (mechanic) Dominaria (keyword) |
| Last used | Evergreen |
| Reminder Text | No official reminder text |
| Statistics |
67 cards  1.5%  6%  1.5%  35.8%  29.9%  1.5%  3%  3%  1.5%  4.5%  3%  9% |
| Scryfall Search | |
| keyword:"Double" | |
Double is a keyword action formally introduced in Dominaria for Grunn, the Lonely King.
Description
Double multiplies certain characteristics or conditions by two.[1] Doubling has existed informally as early as Fifth Dawn with cards like Doubling Cube and Solarion.
Doubling may be applied to:
- Damage (e.g. Furnace of Rath, Gratuitous Violence )
- The number of counters (e.g. Deepglow Skate, Kalonian Hydra)
- The amount of each type of mana in your mana pool (Doubling Cube)
- The amount of mana that permanents you control produce (Mana Reflection)
- Power and toughness (e.g. Grunn, the Lonely King, Unnatural Growth)
- Life total (e.g. Beacon of Immortality, Angelic Enforcer)
- X Values (Unbound Flourishing)
Rules
From the Comprehensive Rules (June 7, 2024—Modern Horizons 3)
- 701.9. Double
- 701.9a Doubling a creature’s power and/or toughness creates a continuous effect. This effect modifies that creature’s power and/or toughness but doesn’t set those characteristics to a specific value. See rule 613.4c.
- 701.9b To double a creature’s power, that creature gets +X/+0, where X is that creature’s power as the spell or ability that doubles its power resolves. Similarly, an effect that doubles a creature’s toughness gives it +0/+X, where X is that creature’s toughness. Doubling a creature’s power and toughness gives it +X/+Y, where X is its power and Y is its toughness.
- 701.9c If a creature’s power is less than 0 when it’s doubled, doubling that creature’s power instead means that the creature gets -X/-0, where X is the difference between 0 and its power. Similarly, if its toughness is less than 0 when doubled, it gets -0/-X. If one characteristic’s value is negative but the other isn’t when both are doubled, it gets -X/+Y or +X/-Y, as appropriate.
- 701.9d To double a player’s life total, the player gains or loses an amount of life such that their new life total is twice its current value.
- 701.9e To double the number of a kind of counters on a player or permanent, give that player or permanent as many of those counters as that player or permanent already has.
- 701.9f To double the amount of a type of mana in a player’s mana pool, that player adds an amount of mana of that type equal to the amount they already have.
Trivia
- Nyxbloom Ancient, Jeska, Thrice Reborn, and Fiery Emancipation triple effects.[2]
- Effects that double power and toughness or +1/+1 counters exist primarily in green, although power/toughness doubling also exists on some red cards. In particular, six green cards associated with the Quandrix college have doubling effects, to flavorfully complement its mathematical theme.
- Effects that double damage, on the other hand, exist exclusively in red.
- Effects that double life total exist only in white.
- Mark Rosewater loves to design doubling mechanics.[3]
- Maro's Gone Nuts is a Mystery Booster test card that spoofs this. It doubles any effect that doubles (it quadruples).
References
- ↑ Eli Shiffrin (April 13, 2018). "Dominaria Comprehensive Rules Changes". magicthegathering.com. Wizards of the Coast.
- ↑ Blake Rasmussen (June 10, 2020). "Triple Your Pleasure, Triple Your Fun". magicthegathering.com. Wizards of the Coast.
- ↑ Mark Rosewater (June 1, 2020). "My Favorite Things". magicthegathering.com. Wizards of the Coast.