Already posted Ama Evo stuff earlier

not a significant upgrade. Healer tag doesnt help all that much since you wouldnt be using her as a sub anyway since her active skill isnt very worthwhile on healer teams... and healer teams arent lacking in RCV to begin with.. they lack HP... which AO doesnt help with either.
But, its an improvement...
Also... 3 turn dark binds dont kill luci teams

Since you can just bring a damage void (elemental) , delayer (echidna/viper), or other defensive cooldown.
10 turn dark binds kill luci teams. Reactive dmg, kills LOLCANNON.
Going back to Angry Bird Collab...
Yellow Bird: 4star 10 team cost,
1855HP (nice) 973 attack (not bad) 86rcv (crap)
leader skill: 2xlight dmg when hp >50 (shitty)
Skill: 11(5 when skilled)turn heart to light (same as valk) awesome
Red Bird: poop
poop poop poop. Skills up poop. Poop
Blue Bird: 4star 10 team cost
1188HP (ok) 1025atk (good) 258 rcv (ok)
Leader Skill: 2.5x atk when Red Blue Green attack (ok for 10cost /4star)
Skill: 20(15 when skilled) 5x poison dmg (same as neptune) awesome
Green Bird: 4star 10 team cost
1225 HP (ok) 933 atk (ok) 271 rcv (ok)
Leader Skill: 1.5 ATK/RCV for balance (meh)
Skill: 14 (9 when skilled) blue and light orbs to hearts (green sticker girl) skill
Black Bird: 4star 10 team cost
833HP (**) 1560 atk (GREAT) 0 rcv (no...)
Leader Skill: POOP
Skill: 14 (9 when skilled) red and light orbs to hearts (black sticker girl) skill pretty good.
Blue bird is good in and of itself to skill up and level up... And is also great to skill up your Neptune if you have one.
Black Bird is an OK sub for a zombie team... (amazing attack growth and only needs 1.2M xp to max... but gets pretty high attack with low amounts of XP.
Yellow and Green Bird are Garbage...
Invade bird is terrible all around...
Sadly the Yellow Sticker Girl still doesnt have a skill up (she actually gets used on some teams...)
So with that in mind... I have several goals from this collab...
1. Stockpile enough bluebirds to skill 2 Neptunes (abyss and holy) and a Bluebird
2. Keep one evo'd Green, evo'd Light and evo'd Black bird for possible conditional dungeons later. (I wont bother skilling these up)
So: 25sta vs 50 sta versions
In search of Blue Birds:
25sta = 5 chances to see regular, 1 low chance to drop Evo'd
50sta = 4 chances to see regular, 1 50% chance to drop Evo'd
As the chance for non bosses to drop 25sta is slightly lower than that of 50sta... but, you can run 25sta twice for the same cost as 50sta.
A note on evolving Bluebirds:
As you have a good chance to get Evo'd bluebirds from 50sta version... why would we still want to farm 25sta version?
It requires
44,520xp + 2 blue masks + 1 blue lit
to evo a blue bird.
The 2 blue masks and 1 blue lit will require on average 30 sta to acquire. ( to maximize the sta used for this, saving the other evo materials from the wednesday and friday runs is best )
The 44,520xp will require 24 sta to acquire (2 runs of Oceanus Falls - Great Dragon of the Abyss @ 2x drop rate). This has the added benefit of having chances for +eggs and King Metal Dragons
You will never run out of things to level up, or +eggs to farm. However, waiting for Collab Dungeons to return for skillups is very difficult.
As such, stockpiling the unevo'd drops from the 25sta version and evo'ing when convenient is the better option.
Personally, my current target is to stockpile 60 bluebirds. I have 12 on US side, and 18 on JP side. It does delay my +egg farming a bit, but oh well.
I have started farming up alt accounts to lvl 20 for the +3 egg while my stamina on main account refreshes anyway.