Cyclone

Cyclone is a status effect that causes afflicted units to be lifted up, completely disabling them, but also rendering untargetability, like a banish. Most damaging effects will not apply to a unit under the effects of a cyclone, but the cyclone can still be interrupted by an effect that moves affected units (which by necessity are area effects), upon which the unit appears to move but flashes back to the point where the spell was interrupted. Direct HP Removal damage will still deal damage to a cycloned unit, with the exception of Invoker's EMP.

Sources of Cyclone

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Some spells have a cyclone as a component, like Torrent or Ravage, but they do not last for a significant duration.