Can units at Vilemaw's Lair move to base using effects like Flash of Foresight (FoF) or Ride the Wind, and what are the ways to bypass Vilemaw's restriction?

Ruling: Units at Vilemaw's Lair cannot move to base using any movement effects, including Flash of Foresight, Ride the Wind, Flash, or Charm. The only way to get a unit from Vilemaw's Lair to base is through Recall effects (like Zhonya's Hourglass), which are distinct from movement.

Sequence:

  • Playing movement spells/abilities targeting units at Vilemaw's Lair is legal
  • The spell/ability resolves successfully
  • However, the movement itself does not occur due to Vilemaw's restriction
  • Recall effects bypass this because they are not movement

Nuances:

  • Units can still move between Vilemaw's Lair and other battlefields (including ganking)
  • Vilemaw's restriction only affects moves to/from base
  • Playing FoF or similar spells on Vilemaw units is legal but will "whiff" (do nothing)
  • Once an opponent passes priority after such a spell, no rewind is allowed as information has been gained
  • Portal Rescue also works as it uses Recall