if evie is going wormhole, keep track of her location when she blinks. Spam broadside there.. 80% of the time she will blink back, jump in time for the broadside to explode.. killing her instantly...
Using a shock pulse focused loadout, Grohk can frequently slow down and damage groups and even hurt fragile champions behind cover. Use hard shields (Barik, Fernando, Makoa) frequently to protect your team.