Tigra and Guilly Squad,need your guidance

ZombieZedd

My 6 6 stars were memes now finally gifting changed that for me.
Never used anyone of them on my previous account too. Tho I'm sure both are good as seen some comments for them in forums. I am stuck at 6.2.1 ( can do with current roster but have limited champs outs side Aq Aw.)
So what's the best rotation for each as attacker and their uses .
I will see videos too but as usual want to know from forum members how to exactly use them as it gives more confident and relaxation after listening from forum members.
Thank you