Sleep

Sleep is a debuff in Arknights.

Effect

“	Invulnerable and unable to take any actions.	”
	—In-game tip

Only enemies can be inflicted with Sleep and the visual effect to indicate that they are Sleeping varies depending on the source. While Sleeping, the enemy is unable to take any actions (similar to being Stunned) but also cannot be targeted by friendly units with some exceptions (see Interactions). However, buffs and debuffs will still affect Sleeping enemies if they are applied before the enemy is put to Sleep.

Though not stated in-game, Sleeping enemies also becomes unable to be blocked.

Sources

• In Reclamation Algorithm, the Hypnotic Censer/Slumber Fragrance puts enemies in the surrounding 8 tiles to Sleep when used.

Operator	Source	Target	Duration
	Peaceful Slumber	Enemies adjacent to the Slumberfoot 　　□　　 　□■□　 　　□	Level 1-6: 4 seconds Level 7-Spec. 2: 5 seconds Spec. 3: 6 seconds
	Deterring Radiance	■	10 seconds
	Mercy (GUA-X Operator Module Stage 2+)	On deployment 　　■	Stage 2: 5 seconds Stage 3: 8 seconds
	Lullaby's Meter	Attack when charged	5 seconds
	Hometown Lullaby	Up to 3 enemies within attack range	Level 1-3: 3 seconds Level 4-7: 4 seconds Spec. 1-3: 5 seconds
	Dreamland's Cradle	Up to 2 enemies within attack range	7 seconds
	Cube of Absurdism	□　　 　□■□　 　　□	5 seconds
	Hymn of Respite	□□□　 □□□□□ □□■□□ □□□□□ 　□□□	7 seconds
	Felyne Lottery Bomb	Randomly on attack while the talent is active	1 second

Interactions

Friendly

Operator	Subject	Interaction
	Slumberfoot	The Slumberfoot can attack and will prioritize Sleeping enemies. While Peaceful Slumber is active, the Slumberfoot's ATK is increased against Sleeping enemies. Level 1: 120% Level 2: 125% Level 3: 130% Level 4: 135% Level 5: 140% Level 6: 145% Level 7: 150% Spec. 1: 170% Spec. 2: 190% Spec. 3: 200%
	Counting Dreams (TAC-X Stage 2+)	Buffs the Slumberfoot's and Blacknight's ATK if there is a Sleeping enemy within Blacknight's attack range. Stage 2: 5% Stage 3: 10%
	Mercy	Blemishine can attack and will prioritize Sleeping enemies. When attacking Sleeping enemies, Blemishine's ATK is increased. Elite 1: 20% Elite 2: 40% GUA-X Stage 2: 50% GUA-X Stage 3: 60% Potential 5: +4%
	Song of Dreams	Erato can attack Sleeping enemies; from Elite 1, her attacks ignore a portion of the target's DEF against Sleeping enemies. Elite 1: 40% Elite 2: 50% SIE-X Stage 2: 55% SIE-X Stage 3: 60%
	Heroes' Paean	Erato will prioritize Sleeping enemies while Heroes' Paean is active.

Enemy

Enemies with Low-Altitude Hovering will lose it when inflicted with Sleep.