Schedule :
5/29 (Thu) 03:00 – 6/12 (Thu) 02:59 UTC
Robin & An Assassin's Pledge Drop Rate Up

Hero : Robin
In this Drop Rate Up event, meet Robin, a Fire Elemental Ranger, who can inflict powerful bleed and burn damage on enemies.
"Behind her jubilant, carefree face lies a grisly and shadowed past. As a private investigator, she spends her days grumbling about tedious cases and paperwork. But every so often, one can catch a glint in her eyes—sharp, intimidating, and cold enough to make you wonder what kind of past she might be hiding."
Ranger-exclusive Artifact, An Assassin's Pledge
Players can also obtain the Ranger-exclusive Artifact, An Assassin’s Pledge, that increases Effectiveness, and after attacking, inflicts burn on the target.
Guaranteed Summon System
1. Each summon will cause the summon counter to decrease by 1. (Maximum 120 Summons)
2. If a player does not receive the featured Hero after 120 summons, then the following summon is 100% guaranteed to summon that Hero.
3. If the featured Hero is summoned, then the Summon Counter is reset.
Summon Probability
Hero :
5★ Robin : 1%
4★ Hero : 4.5%
3★ Hero : 41.25%
Artifact :
5★ An Assassin’s Pledge : 1.05%
5★ Artifact : 0.7%
4★ Artifact : 6.5%
3★ Artifact : 45%
* Players may check more detailed summon probability by going to Summon > Robin and An Assassin’s Pledge Drop Rate Up
Please Note
– The Drop Rate Up applies only to this Banner during the event period. Players are able to use both the Guaranteed Drop Rate Up Banner as well as regular covenant summons.
– Moonlight Heroes will not appear during Guaranteed Drop Rate Up banners.
– The featured 5★ Hero will have their probability rate increased to 1% when summoning on this banner and no other 5★ Hero can be summoned.
– Please note that for this week, no maintenance will be required, and the update will be applied automatically.
Source : Onstove