what makes the dev think Invincible is a fun and healthy mechanic?

[Gatrix]

It only drags the game and causes unhappy experiences. Specially when you play on daily events

 

[Cartouche‼]

counters for those fights: Outtake Special Move, Silent Kill Valentine, Doublicious Double, and Red Velvet Eliza (if they buff her SA)

other option: avoid the fight?

 

[vucaar]

Maybe you're talking about the Big Band's daily event and I understand this can be frustrating because it could activate for the most part of time (even on the second or first hit on a combo) but you can follow the suggestions that the other buddy said, also you can focus on characters, SA's, special movements and blockbusters that can inflict bleed/heavy bleed to deal damage (invincible doesn't protect of bleed), or you can use blockbusters that can remove the buffs like Drill Tempered (Filia), Catellite Lives (Double), Canopy Bounce (Parasoul), and the blockbuster of Peacock's car (I don't know the name).

P. S.: The Big Band's daily event was the most annoying after the old Valentine's event but I end enjoying because it really represents a challenge.

 

[Cartouche‼]

and the blockbuster of Peacock's car (I don't know the name).

Bandwagon Rushdown
thanks for the additions, i forgot some blockbusters have the same effect!

 

[Shawesome]

Bandwagon Rushdown is also the name for Double’s BB2. Pray that doesn’t get confusing.