Haunted Cloak
Artifact — Equipment
Equipped creature has vigilance, trample, and haste.
Equip 
(: Attach to target creature you control. Equip only as a sorcery.)
Bear the weight of so many spirits and you'll surrender civility and restraint to savagery and instinct.
Volkan Baǵa
Commander Legends (CMR)
• #463Rulings
If a creature enters the battlefield under your control and gains haste, but then loses it before attacking, it won't be able to attack that turn. This means that you can't use one Haunted Cloak to allow two new creatures to attack in the same turn.
(wotc • 2020-11-10)
Rulings
If a creature enters the battlefield under your control and gains haste, but then loses it before attacking, it won't be able to attack that turn. This means that you can't use one Haunted Cloak to allow two new creatures to attack in the same turn.
(wotc • 2020-11-10)