The Lesser Key

Notice

You can obtain 8★ Gusayna with 6 lap completions (or 120 floors) without an event unit.

Event Info
The Lesser Key event consists of 20 floors. In the tower, you will encounter a boss every 5 floors. Defeat all the bosses and ascend to the top floor! Defeat the final boss on the 20th floor to clear the Lesser Key! Defeating each of the bosses will earn you a reward. Clearing the Tower will also earn you a 6★ unit! The reward you receive every 5th floor will be determined at random from your second play through on. Good luck! The Lesser Key event also includes a special card reward for BT Pts earned. * Card rewards will be sent to your Unit List. If your Unit List is full, rewards will be sent to your Inbox instead.

The following units in Three Step Packs 7 give bonus BT points in the The Lesser Key event:

Unit	★	Type	C	S	R				Skill	Source
Jeannine	9	Melee	30	B	130	238,894	226,866	175,978	Knockback	Three Step Packs 7 One Shot Packs 40 One Shot Packs 70 OP Unit Exchange OP Unit Exchange 4
Benoit	7	Magic	25	C	130	94,347	116,523	98,210	Slow, Atk Boost (Female), Blink	Three Step Packs 7
Margaux	5	Melee	20	A	130	33,600	24,350	20,700	Knockback	Three Step Packs 7

	Unit	★	Type	C	S	R				Skill	Source
Lap Rewards
	Ayna	6	Missile	10	C	150	55,860	57,880	40,368	Slow, Gravity Pulse	The Lesser Key 20th Floor Completion Reward
BT Point Rewards
	Gusayna	8	Magic	25	C	150	160,837	140,369	130,104	Poison, Penta Attack	The Lesser Key 700,000 BT Point Reward