Symbiote Supreme use?

I just popped my last freak of nature crystal and pulled a 5* Symbiote Supreme.
Now i have him as a awakened 4* but if i ever used him its for synergies and not himself.
Ive read his abilities and so on but i do not really understand him and what his strenghts are. Ive understood that he is kind of dependent on match ups.
Anyway, If someone wanna give me a quick guide or explanation i would be grateful.
Also, is his sig crucial or just a little nice bonus to him?
Now i have him as a awakened 4* but if i ever used him its for synergies and not himself.
Ive read his abilities and so on but i do not really understand him and what his strenghts are. Ive understood that he is kind of dependent on match ups.
Anyway, If someone wanna give me a quick guide or explanation i would be grateful.
Also, is his sig crucial or just a little nice bonus to him?
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Comments
1) one of the best buff controllers. During his first phase you can stack nullifies and it will just take off buffs as they show up, as well as give you loads of power. When you switch to this phase it will remove all buffs on the opponent
2) phase 2 limits damage done to you, caps it at 15% per hit, increases your perfect block, and 50% chance on well timed blocks to put more staggers for more power gain and buff removals.
3) gain furry, and place bleeds that stack, due to the time I have had 15 stacks going, and each hit of specials can put staggers on.
4) Sp3 triggers all of them at the same time
he is one of the, if not the best mystic in the game right now, and does not need to be awakened.,
Except LOL or ROL defenders can't stand more than 2 sp3.