@stukapooka The solar aura would indeed be visible, like a glowing sun field around the Sunflower and it increases in size and and visual glow when you activate it.
The barrel for spring barrel would indeed be visibly different, although still obviously a barrel. Probably have an obvious spring bottom that can be seen and then it uncoils when it activates.
Decoy burrow is a bit confusing which is part of the point, but I was trying to come up with an alternative to burrow and sprint burrow. I was pondering a slow burrow that lasts a lot longer for better ambushes, but wanted to try something new.