Blink Dog

An attacking or blocking creature that phases out is removed from combat.

Choices made for permanents as they entered the battlefield are remembered when they phase in.

Phasing out doesn't cause any "leaves the battlefield" abilities to trigger. Similarly, phasing in won't cause any "enters the battlefield" abilities to trigger.

Any continuous effects with a "for as long as" duration, such as that of Mind Flayer, ignore phased-out objects. If ignoring those objects causes the effect's conditions to no longer be met, the duration will expire.

If an opponent gains control of your Blink Dog, activates its Teleport ability, and the duration of the control-change effect expires before it phases in, Blink Dog phases in under your control as that opponent's next untap step begins. If they leave the game before their next untap step, Blink Dog phases in as the next untap step begins after their turn would have begun.

Permanents phase back in during their controller's untap step, immediately before that player untaps their permanents. Creatures that phase in this way are able to attack and pay a cost of {T} during that turn. If a permanent had counters on it when it phased out, it will have those counters when it phases back in.