I got 2 yagryus on a 20 Chain of Bombshell xD the next one I got at 43 chain.
Decoy + Reverse was only one strategy, I also used Masamune on my main character and feeded him with buffs while using my other team mates as meat shields with decoy on each one separatly. That way you could control Omega's actions and have proper leverage to heal and back off.
That's odd, I counted the HP damage and it was way over 1M HP.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
