|Last Used||Unreleased mechanics|
|Reminder Text||No official reminder text|
A permanent with the double-tap symbol (as a cost for an activated ability) could be tapped twice within one turn. First time you tapped it normally, tapping it ninety degrees. You could then tap it again, turning it essentially upside down. Creatures only untapped one rotation during the untap step, so if you double tapped it, it would take two turns to untap fully.
Obviously, this mechanic had to use abilities where there is an advantage to tapping it twice on the same turn. But while novel, it proved to be hard to design to and the play pattern ended up being boring —players tapped twice the first turn and then just tapped it once for the rest of the game.