If you're playing against a Strix, your best option is hit 1 fully charged shot before he goes invisible, then remember, Strix is a peeker, he will peek to get his shots while invisible, try to predict when he might peek or where he might be and won
When she uses any of her mobility ability throw a grumpy bomb close to u so u can stun her and kill her. When she use the ice block ability, put a grumpy bomb next to her and surround her with bomb. Then when she comes out detonate all the bombs.
Shell Shield has the longest base cooldown time of any shielding ability and Makoa lacks a Legendary card that reduces its cooldown. Shoot down the shield when possible to ensure its usefulness is limited.
As I said in my Willo vs. Kinessa tip, play carefully and keep moving. As a continuation of that tip, keep Flutter on as low of a cooldown as possible. You can also use your ultimate as a distraction play if necessary.