Use Codex to select Battle candidate

Another use of the Codex is to help select your candidate against the Battle Arena/Tournament dragon.
From the Battle Chart posted with each Tournament thread, you know the strengths/weakness based on type/color.
Use the Codex & select the type/color showing the least number of candidates.
Scroll thru the candidates & select the ones showing 3 strengths(if available), 2 strengths or just 1 strength(=type/color advantage). Apparently 3 is the max. advantage even if you have 4 or 5 color advantage.
If your candidates has other type/color, discard those that have the weakness type/color listed in the Battle chart.
So you now have a shortlist of battle candidates using the Codex.
Please note that some limited/event dragons are not included in the Codex(yet?) & I have no info on Artic types being in the Codex or not.

Hope I have explained enough & not confused more than helped.

Please be careful NOT to disenchant your dragon by mistake or being in a hurry. The Codex response is slow.

Thanks! This is a very helpful tip!!!

Here is the battle chart for reference.

Type advantages

Enemy Type	Use	Avoid Using
Red	Yellow, Blue, Stone, Tropic, Champion	Green, Dino, Zodiac, Metal, Soccer
Green	Red, Mythic, Dino, Gemstone, Royal, Champion, Soccer	Purple, Black, Stone
Yellow	Pink, Black, Cosmic, Zodiac, Champion	Red, Blue, Gold
Blue	Yellow, Purple, Rainbow, Gemstone, Champion, Metal	Red, White, Stone
Purple	Green, Pink, Gold, Zodiac, Royal, Champion	Blue, White, Cosmic, Soccer
White	Blue, Purple, Stone, Rainbow, Champion, Egypt, Soccer	Black, Mythic, Cosmic, Royal
Pink	Black, Gold, Fairytale, Gemstone, Champion, Soccer	Yellow, Purple, Mythic, Royal
Black	Green, White, Cosmic, Rainbow, Royal, Champion, Egypt	Yellow, Pink, Fairytale, Gemstone
Diamond	Diamond	Gold, Gemstone, Metal
Mythic	White, Pink, Fairytale, Dino, Champion	Green, Rainbow, Zodiac, Tropic, Egypt
Cosmic	Purple, White, Champion	Yellow, Black, Fairytale, Zodiac
Gold	Yellow, Diamond, Champion, Metal, Soccer	Purple, Pink, Rainbow, Royal, Egypt
Fairytale	Black, Cosmic, Zodiac, Royal, Champion, Soccer	Pink, Mythic, Rainbow, Tropic
Stone	Green, Blue, Tropic, Royal, Champion, Egypt	Red, White, Dino
Dino	Red, Stone, Tropic, Champion	Green, Cosmic, Gemstone, Soccer
Rainbow	Mythic, Gold, Fairytale, Champion	Blue, White, Black, Tropic, Metal
Gemstone	Diamond, Black, Dino, Champion	Green, Blue, Pink, Royal
Zodiac	Red, Mythic, Cosmic, Champion, Metal	Yellow, Purple, Fairytale, Soccer
Tropic	Mythic, Fairytale, Rainbow, Champion	Red, Stone, Dino
Royal	White, Pink, Gold, Gemstone, Champion	Green, Purple, Black, Stone, Fairytale, Egypt
Ice Age	Abominable, Champion	Blizzard
Abominable	Blizzard, Champion	Ice Age
Blizzard	Ice Age, Champion	Abominable
Champion	Type has no effect here	Red, Green, Yellow, Blue, Purple, White, Pink, Black, Mythic, Cosmic, Gold, Fairytale, Stone, Dino, Rainbow, Gemstone, Zodiac, Tropic, Royal, Ice Age, Abominable, Blizzard, Champion
Valentine	Type has no effect here	Type has no effect here
Metal	Red, Diamond, Rainbow	Blue, Gold, Zodiac
Egypt	Mythic, Gold, Royal	White, Black, Stone
Soccer	Red, Purple	Green, White, Pink, Gold, Fairytale
Olympus	Type has no effect here	Type has no effect here

Additional info about champ and dark/corrupt types...

Enemy Type	Use	Avoid using
Champion	The following types are "neutral" to champion types: Diamond, Egypt, Metal, Olympus, Soccer, Valentine **Users have reported that low level dragons are sometimes useful against high level champs	Black, Blue, Champion, Cosmic, Dino, Fairytale, Gemstone, Gold, Green, Mythic, Pink, Purple, Rainbow, Red, Royal, Stone, Tropic, White, Yellow, Zodiac
Dark (corrupt)	Unknown; some have success with champs & white types (Corrupt dragons use black "smoke" magic; consider dragons that are strong against black types: green, white, cosmic, rainbow, royal, champion, Egypt)	Unknown (Corrupt dragons use black "smoke" magic; consider avoiding dragons that are weak against black types: yellow, pink, fairytale, gemstone)

Notes on new type dragons (something to take in account when choosing your fighters):

Red Fire Magic: Elemental, Holiday, Dynamite, Map
Black Smoke Magic: Dark, Spooky
Pink Sword Magic: Olympus, Fey, Valentine
Blue Bubble Magic: Arcane, World, Bomb
Purple Spell Magic: Tarot
Yellow Tornado Magic: Egypt
Green Vine Magic: Soccer, Dino, Food, Flower