Couple Gameplay Questions

Hi, curious about a couple things: 1) For the missions, is there any rhyme or reason with which Transformers to choose, in order to maximize the # of open slots? and is there any tricks on guessing (I always prefer crystals as opposed to coins) 2) What is an accessory? For the Daily Quests, there is one listing called "use a grade 2 accessory". It's not energicons, so I'm not sure what it is. 3) How do most people use their gems? I only use them when I need to quickly upgrade a Transformer during the weekly challenges, or when I need to switch out a weak Transformer for a regular game (that gives out purple or gold crystals). But that's a not a big use, so I've been accumulating them. I wonder if it's worth using them to buy new Transformers. Thanks all!
Exit mobile version