Electro 
Fire elements, who belongs to the Source Citadel faction. Their position in combat is Front.
Dustin is a Utility crew member who revolves his kit around [Celestial Fire]. [Celestial Fire] is an [Explosive] he can generate under certain conditions, whether through drawing cards or the use of certain cards. Utilizing this, he offers great support with the Cost Generation and Healing, while also dealing a decent amount of damage.
Playstyle and Key Mechanics
[Celestial Fire] is the main component for Dustin to function. It is a unique skill only featured to him and is capped at 18 and an extra [Celestial Fire] gets triggered immediately upon obtaining it. His skills help him generate it, but he can also get more from other sources. ets check out his cards.
For his first card [Thunder Awaken], this is a 2-cost Red Card that deals Electro damage capable of inflicting [Stun] and triggering [Thunder]. This card can also generate [Celestial Fire] when used.
Next is [Fire Rain], a 3-cost Yellow Card that draws 2 cards, prioritizing 3-cost and a Yellow Card. This card reduces the cost of the next card used to 0 and will generate [Celestial Fire] equal to the original cost of the card. As an example, we have Aoba’s [Improvision], a 10-cost Yellow Card. If [Fire Rain] is used, then [Improvision] immediately, he gains 10 [Celestial Fire] in the process.
Lastly, his Ultimate [Fire Cascade] triggers all of his [Celestial Fire] at once, dealing damage. Additionally, for each Black Card and [Element Core: Fire] destroyed when using this card, he then inflicts [Blaze] towards a random enemy. This card will also trigger [Wildfire] and [Detonate] in the process.
Investment
Dustin works really well at his base copy; however, certain breakpoints like Awakening 2 and Awakening 5 will definitely give some nice quality of life when using him.
Awakening 1 - Increases the damage taken by all enemies affected by any Fire-related status effects. This is a good stopping point to provide more damage to the whole team.
Awakening 2 - Enables [Celestial Fire] generation with Yellow Cards.
Awakening 4 - A general stat scaling effect whenever [Celestial Fire] is generated.
Awakening 5 - Enables [Celestial Fire] generation whenever Black Card or [Shadowcraft] are generated, as well as with Purple cards.
Resonance
Resonance 1 — Improves [Thunder Awaken] by making it trigger [Blaze] as well as making it increase his ATK by 1% every time he generates [Celestial Fire].
Resonance 2 — Enables him to heal himself and another ally with the lowest HP when generating [Celestial Fire].
Resonance 4 — He gains immunity to [Interrupt] and [Stun] while also making [Celestial Fire] generate cost when triggered.
Resonance 5 — Enables [Celestial Fire] generation with Red Cards.
Synergies
❗ ❗ ❗ The Synergies mentioned here are merely samples. Taking their core mechanics as an example, you can use many other characters as replacements or other synergies. ❗ ❗ ❗
Stella - Can spam Red Cards, which will help [Celestial Fire] generation from Resonance 5.
Nayuta - Helps generate Black Cards as long as he is paired with a Green Card user.
Katas - Thanks to the variety of Fire-related status effects, Katas greatly benefits with the Leader skill’s Cooldown Reduction.
Paladi - At Awakening 2 and having Retraction Bomb MK 3 makes them best friends by constantly activating it through [Explosives].
Gear and Affixes
Some examples of overall good equipment choices for Dustin. For specific picks, please check the respective teams.
Weapons:
UR Retraction Bomb MK 3: Whenever a total of 33 [Explosives] explode, drops a [Retraction Bomb MK 3] on the enemy field and triggers [Wildfire]. The yield of the bomb increases according to the accumulated number of [Explosives]. [Retraction Bomb MK 3] is [Explosive].
UR Scorching Spike: Whenever [Ignite] is inflicted 8 times or [Blaze] is inflicted 4 times, inflicts [Wildfire].
SSR Unbewusstes Probe: Whenever you play a Red Card of cost 3 or more, random enemy receive 3% less healing. This effect stacks up to a maximum of 75%.
SSR Million-Tons Revelation: ATK +80
SSR: Degenerate Blackrock: Increases wearer's final DMG dealt by 10%. This effect stacks.
SR Viscera Collector MK 0: Using [Leader Skill] restores 0.4 Cost. This effect stacks.
R Gardener Multi-Tool: Playing a Red Card increases ATK by 0.5%. This effect stacks.
R Mass Projector: Using [Leader Skill] increases ATK by 1.5%. This effect stacks.
Armor:
UR Lucid Dream Fiber: Wearer's Red Cards heal the wearer for 2% of the damage dealt.
UR Grandfather Reactive Armor: At the start of battle, convert 5% ATK of the ally with highest DEF to the wearer's ATK. When taking DMG, transfer 25% of the DMG taken to the ally with highest DEF.
SSR Simulated Stars: Using [Leader Skill] restores 5% HP. This effect stacks.
SSR External Memory Matrix: Max damage taken per hit is 33% of Max HP.
SSR Mecha Armor: Whenever [Slash] / [Rend] inflicted by wearer deals damage, restores HP equal to 5% of the damage dealt.
SSR Black Rock Armor: Reduces wearer's final DMG taken by 10%. This effect stacks.
SSR High Dimension Construct: Generating a Black Card restores 5% of Max HP. This effect stacks.
SR Resonance Fiber: When own skill card is used, restores 2% of Max HP.
Accessory:
UR Dawncloud Seal: Max Hand Size +1.
UR World Line ß Box: Draws a card whenever you encounter a wave of enemies, prioritizing wearer's skill cards.
SSR Mobius: Cards in your hand are replenished 0.25 seconds faster. This effect stacks.
SSR Divinity Seal: Gains 2 Cost at the battle's beginning. This effect stacks.
SSR Fengshui Tactical Drone: For every 8 cards used, increases ATK or DEF by 2%, up to a maximum of 50%.
SR Magic Spring: Restores 0.02 Cost per second. This effect stacks.
R Harrison Device: Playing a Yellow Card restores 0.3 Cost. This effect does not stack.
Affixes
Using [Leader Skill] restores 0.2/0.3 Cost. This effect stacks.
Using [Leader Skill] restores 2/3% of own Max HP. This effect stacks.
Using [Leader Skill] increases own ATK by 0.5/1%. This effect stacks.
Increases own ATK by 1/3%. This effect stacks.
Increases own ATK by 10/30. This effect stacks.
Restores 0.01/0.02 Cost per second. This effect stacks.
Playing a Red Card increases own ATK by 0.2/0.5%. This effect stacks.
Increases final DMG dealt by 2/5%. This effect stacks.
Gains [Hyperarmor] for 1 second when using own skill cards. This effect stacks.
Deals 3-5% more Electro DMG. This effect stacks.
Deals 3-5% more Fire DMG. This effect stacks.
This character's [Explosive] deal 5-10% more damage. This effect stacks.
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