20 Sept 2016
Wispweaver Angel's triggered ability can target another Wispweaver Angel. If so, the two Angels can loop in and out of exile as many times as you'd like before you choose to target another creature or not to use the triggered ability.
20 Sept 2016
If a creature token is exiled this way, it will cease to exist and won't return to the battlefield.
20 Sept 2016
Auras attached to the exiled creature will be put into their owners' graveyards. Equipment attached to the exiled creature will become unattached and remain on the battlefield. Any counters on the exiled creature will cease to exist.