Creature groups
Items got crates, cards got tomes, now its the creatures turn. You can make groups on your creatures page and move your crits into them, so your army, your collection and what you keep for the altar don't sit all in one endless pile. I have a few hundred crits myself and that page was a wall..

Press Organise, pick as many creatures as you want and move them to a group. Each group shows the vitality of its creatures together, how many can upgrade and how many have something to collect. You can fold the groups you don't need to see and set their order as you like.

If you own the "Distribute Vitality To All Creatures" feature from the MD Shop, each group gets its own distribute button too, so you can heal just the army you fight with and not waste vitality on the rest :)

Groups come with a few default pictures, or you can have a custom one drawn from the creatures inside it, same as with crates and tomes. It works on mobile too, i know many of you play from the phone.