Breaking Ending 3 With Foldartals | IS4 Birdknights

IS4 Ending 3 - Bird operators only, D10 (Braving Nature 10)
Ending 3 is a major test of your burst damage and survivability simultaneously. There's only a 10 second window to deal damage to the boss every 80 seconds, and the boss itself hits extremely hard in phase 2. And the entire time it's spreading pink Seedbeds around that make you take double damage. What's a bird player to do?
The answer is to spend the entire run scouring combats and shops for multiple stat buff Foldartals, and then slam every single one onto the final boss node. With +50 ASPD (another +70 from Golden Chalice) and +100% HP (another +60 or so % from other relics), the survivability challenge becomes mostly trivial, and if there's one thing birds are good at, it's short duration burst.
At even higher difficulty I'm not quite sure if +100% HP is enough to survive, since this boss has 3000/4500 ATK at D15. Not too thrilled about the prospects of trying that out. Of the four ending 3 bosses across all IS seasons, I kinda like this one the best. Though IS2 ending 3 is pretty damn cool...
Music:
Dimensional Escape (IS4 ED3 boss theme)
Push Forwards - Ex Astris
0:00 - Relics and Foldartals
0:30 - Opening
2:23 - P1 Burst
3:44 - Phase 2