Double

Keywords · beginner

To double something means to increase it by an amount equal to its current value.

How it works

• Doubling a player's life sets it to twice its current total.
• Doubling the number of a kind of counter on a permanent adds that many more of those counters.
• Doubling the amount of mana, damage, or other values works the same way.

Rules notes

• Doubling reads the current value at the moment the effect happens; it is a one-time calculation, not an ongoing effect, unless the card says otherwise.
• Some effects double permanently as a replacement (for example, an effect that doubles tokens created or counters placed).

Rule reference

[701.10]