How to use the chat bot in Scrolls

My experience, paired with documentation gives this simple explanation.

• Growth: Cheap(ish) units that have a lot of effects or have spells that help them grow or summon other units.
• Energy: These scrolls hit hard and are intended to do a lot of damage, quickly.
• Order: Order scrolls tend to be rather weak as single-units but can gain strength when other order units are played in close proximity to them. Many of these units give a lot of bonuses to their fellow units when they are near by.

In my opinion, the Order type requires the most game-play strategy while the other two types can do well from a basic deck-level strategy and a bit of luck. It's been argued that this makes the game rather unbalanced, against Order.

Card rarity is indicated by the wear and tear on the scroll image itself, the more worn scrolls being more rare.

I've been looking about midway down the left side of a scroll as that seems to have the most distinct markings.

Here's a common:

An uncommon:

And a rare: