the player should be able to tell if an orb is going to heal/damage/block/evade at a glance. just a little 16x16 icon in the bottom right shouldn’t clutter the screen too bad, or maybe change the background orb shape to be spikey, shield-shaped, cross-shaped etc. for the different effects
tapping an orb without moving should show what that orb does
I think for a puzzle game, limiting your player’s abilities by time overrewards skilled players and overpunishes unskilled ones. I think the same would be easier to learn and easier to balance if instead of time being a factor, the amount of spaces you can move an orb is
edit: after playing a little more i see that many of the orbs thematically match what they are supposed to do, but i think many do not