So, the first ability:
Alright, so normally I would call this as character control, however it's only so in the most strict of definitions. The ability is not overpowered, per say. 

[b]BUT![/b]

Under these regulations it shall be acceptable:
[list]
[*]It requires an indicator, a fog or an orb of light. As the others have mentioned previously.[/*]
[*]It HAS to be a projectile, wherever this projectile hits is where the effect will happen. Say the torso, or the arm. Those parts are vulnerable to the effects. The projectile can get larger based on ticks, making it more viable.[/*]
[*]The higher the tier of the character being struck by this power, the easier it is to resist. A character of equal tier could resist it once or twice without it being silly. A character of lower tier would have difficulty resisting. A character of higher tier would be able to shrug it off more than once.[/*]
[/list]

If you find those acceptable, then yeah that initial ability is acceptable.

On the second power: 
The way I can see this working is if it works like Flame Swathe from Dark Souls 2.
[url=https://www.youtube.com/watch?v=O8T3wD77i0w]Video Reference[/url] 
If you make it work like that, then it's acceptable. A short delay followed by a large explosion.