Skill Set
Hero Build Overview/Explanation
This is probably Echidna's best bait build for arena that also has some game on the player phase. For most foes, Rallying atk onto her is what you want to do, and against Chrom, you want to Rally spd in a spot where you predict Chrom will attack given Azura's dance.
The way the build works is that she will take 1 hit from the enemy, and will almost always double in response, triggering Blue Flame for massive damage on the second hit. There is probably no meta unit that will double her except for Duo Byleth, but what f2p/budget unit does not die to Duo Byleth?
I do not think there is any non-red arena meta unit that can kill her using this build in 1 round of combat, and she absolutely destroys a huge amount of meta threats all over the color pie. It is a given that she is great against B!Hector, but she always beats L!Chrom and L!Julia as well as non-blue threats like L!Corrin, L!Alm, L!Micaiah as well as a bunch of other green threats. She can even beat Surtr in 1-round of combat.
I think she is the best budget green unit to use in arena right now.
Instead of Joint Drive Spd, she can also use Joint Drive Atk to good effect.
Make sure to take advantage of Atk/Spd Bond 3 in her seal slot.
