How to Prioritize Elemental Dragon Development in Infinity Kingdom?

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Infinity Kingdom features elemental dragons of various attributes, each with unique skills. Paired with different Phantoms, they offer diverse team composition options.

Dragon development is a lengthy process and a key factor in boosting combat power. So, which dragons should be prioritized, and where can you obtain the necessary resources?

Elemental Dragons Overview
There are 7 elemental dragons in total:

Basic Elements: Water, Earth, Thunder, Wind, and Fire Dragons. All are unlocked by completing Chapter 15 of the main storyline.
Advanced Elements: Light and Dark Dragons. These require reaching VIP Lv. 15, which is extremely difficult and won’t be detailed here.

Dragon Development — Leveling Up
Dragons gain stats and provide bonuses to deployed Phantoms by consuming Gold to level up.

Leveling also unlocks skills:

At Lv. 5, 15, and 25, you unlock three skills by spending Gold + Dragon Crystals.

Crystal costs per skill tier:

The max level is 40. Gold costs scale progressively:

Tip: Leveling time increases with each tier. Focus on leveling your main team’s dragon to Lv. 25 first to unlock all three skills, then shift resources to other dragons.

Dragon Development — Taming
Taming upgrades dragon skill levels:
Skills 1 & 2: Deal damage or apply control effects.

Skill 3: Passive buffs. Upgrade priorities vary by dragon.

Each skill maxes at Lv. 10. Crystal costs per level:

Upgrading skills increases damage and buff effectiveness.

Resource Sources: Gold
Gold can be obtained from:

Daily auto-generation from Towns.
Daily Quest rewards.
100-point Activity Reward.
Growth Quest market purchases.
Alliance Quests (gathering tasks).
Market purchases.
Foundry conversions.
Resource chests from game gifts.
Chests/Gold items in paid packs.
Resource Sources: Dragon Crystals
Crystals mainly drop from Dragon Chests, earned by defeating open-world mini-bosses:

Steel Warrior → Water Chests
Mad Tarzan → Thunder Chests
Lava Lurker → Fire Chests
War Fortress → Earth Chests
Wind Crystals: Exchange 500 Arena Medals for 10 crystals (low efficiency).

Avoid buying crystals in the Market—poor value.
Chest tiers (based on boss level) and crystal yields:

Note: Wind Crystals are hardest to farm, making Water, Earth, or Thunder Dragons the mainstream focus. Fire Dragon is less common.

Key Tips
Priority for low spenders: Upgrade Water or Earth Dragon first (align with your team).
Never stop purging Chests: Set alarms to avoid wasting time.
Efficiency buys: Purchase Dragon Leveling Speedups at 30–40% discount in the Market if Gold permits.
Scale boss difficulty: Keep mini-boss levels high to simplify future Thunder/Fire Dragon upgrades—you never know when you’ll get lucky with Phantom pulls!

Final Notes

Dragon development is a marathon. Leveling is straightforward (time + Gold), but taming demands patience. Remember: the grind is part of the joy!

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