Flying
: Advanced Hoverguard gains shroud until end of turn. (It can't be the target of spells or abilities.)
Defender, flying
Hoverguard Observer can block only creatures with flying.
When Hoverguard Sweepers enters the battlefield, you may return up to two target creatures to their owners' hands.
Flying, vigilance
When Looming Hoverguard enters the battlefield, put target artifact on top of its owner's library.
Equipped creature has flying.
Equip (: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)
Affinity for artifacts (This spell costs less to cast for each artifact you control.)
(: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)