HoundofShadow said: If you want to get the best prizes as fast as possible, switch your 4* shards to Polaris. If you don't care and just want to hit max progression or have fun playing the game, continue with Iron Fist. There isn't any right or wrong way to do. What's more important is that you have fun and not getting burned out quickly.
ThaRoadWarrior said: You don't need one on roster to do it, you can collect shards for characters you don't have and then roster them when you have a cover equivalent
ThaRoadWarrior said: I think Polaris is pretty powerful, but I'd probably still favorite Rocket first since you'll be able to get him sooner via 3* rocket shard drops and he will improve your quality of life big time along the way.
KGB said: If you are up to 3 3* Storms then you should find a way to roster her by dropping another 4* not named Elsa (unless you are in a weak alliance and can't get more covers for her there).You also need to find a way to earn a bunch of HP in a hurry to roster at least 1 more if possible.KGB
KGB said: The upcoming Alliance event - Battle at the Basilica will have Elsa Bloodstone as the round 5-7 rewards.If you are (or can get) into a decent alliance that can finish round 7 then you will snag 3 more covers for her giving you 4 covers. At that point she's worth keeping on your roster even if she's not a meta 4*.KGB