Overview
Arlecchino’s damage is built entirely around the Bond of Life mechanic. BoL normally acts as an absorption layer for incoming healing the character that has taken on Bond receives, but Arlecchino instead uses it as a damage resource. Thanks to her Ascension 4 Passive, Arlecchino cannot be healed while in combat under any circumstances except when using her Elemental Burst. This means that Arlecchino’s Bond will never absorb incoming healing, and will not be reduced on its own.
Instead, when Arlecchino has Bond of Life above 30% of her Max HP, she gains the Masque of Red Death effect: Arlecchino will gain a permanent and non-overrideable Pyro infusion. Additionally, each of her Normal Attacks will consume a set amount of Bond of Life, and deal accordingly incrased damage. She is able to switch out and maintain this infusion freely as long as her Bond remains above 30%. Arlecchino’s primary method of gaining Bond of Life is using her Elemental Skill to apply the “Blood-Debt Directive” debuff to enemies.
Blood-Debt Directive and gaining Bond of Life
Each enemy hit by Arlecchino’s Elemental Skill will be given a Blood-Debt Directive. It will last 30 seconds or until Arlecchino claims it through a Charged Attack or Elemental Burst, with the former method being part of her main gameplay loop. This Skill will generate 5 Pyro Particles on cast.
If Arlecchino immediately claims the Directive, it will grant her 60% Bond of Life. If she instead were to wait at least 5 seconds, the Directive will upgrade and increase the amount of Bond of Life gained to 130%. This is something generally required to use her effectively. Her Constellation 2 removes this requirement. If multiple enemies are hit, each of them will grant Bond; howeer, Arlecchino can only gain up to 145% Bond from a single claim. If an enemy dies while under the Directive but before Arlecchino has claimed it, she will be granted the corresponding Bond regardless.
Elemental Skill Cooldown & Using Bond of Life
Arlecchino's Elemental Skill has a baseline cooldown of 30 seconds, however, Arlecchino is able to reduce it by 0.8 seconds for every Normal Attack that hits an enemy while under her Masque of Red Death effect. Arlecchino's Elemental Skill's effective cooldown then becomes as low as just under 15 seconds, making rotation length heavily dependent on her teammates. Bear in mind that Arlecchino has a 5 second requirement for her Blood-Debt Directive to fully bloom without her C2. Typically, Arlecchino will perform rotations of 16-18s length.
Each of Arlecchino's Normal Attacks
Invitation to a Beheading will consume 7.5% of her current Bond of Life. On doing so, Arlecchino's Normal Attack damage will be increased by a corresponding amount, additionally scaling on her Normal Attack level.
Assuming Arlecchino starts with 130% Bond of Life, the maximum attack of infused Attacks she can perform is 19, as after attack #19, her Bond will fall just below 130%. Due to this, you will generally want to perform about 18-19 Normal Attacks per rotation. The most common way of doing so is performing 3 Normal Attacks cancelled by a Dash 6 times, or 6N3d. Doing this, Arlecchino will also apply Pyro on every first hit of each N3d string, for a total of 6 reactable hits. It is possible to get quite a few more with some more advanced gameplay.
The Bond that is left over after Arlecchino finishes attacking will not reset and will instead carry over as long as combat is active, making each of Arlecchino’s rotations subsequently stronger.
Elemental Burst
The other method by which Arlecchino can clear her Bond is using her Elemental Burst. Arlecchino's Elemental Burst has a cooldown of 15 seconds and costs 60 Energy to use.
On cast, Arlecchino will. deal AoE Pyro damage and consume he remaining Bond of Life. She will heal herself for an amount scaling with both the amount of Bond of Life she consumed as well as her Attack. Casting her Burst will also reset Arlecchino’s Elemental Skill cooldown. Ideally, Arlecchino never wants to use her Burst prior to C6 – the animation is quite long and the damage doesn’t make up for it. Doing this requires proper dodging and/or a Shielder in the team, which is something Arlecchino can generally slot in without too much fuss: Nicole is an excellent teammate, as is Citlali.