Sink or Swim

Use this strategem when a unit is selected to
move. You must do the pool relay in 49 seconds
or less to complete the challenge. If it is a friendly
unit selected and the challenge is complete, your
unit may move a second time (not cumulative
with other double move abilities). If you fail,
your unit may not move this turn. If it is an
enemy unit you've selected, a successful attempt
stops that unit from moving, but a fail causes
them to move twice this phase.