Paralyzing wave

This can be used as a bonus action, anyone within a 15 ft radius makes a constitution saving throw above 15 or falls prone, can be used again after a short or long rest, this affects even those that are immune to falling prone but anyone with resistance to paralyze gets +5 to their con save

at level-10 con save must be rolled above 20 or fall prone

at level-15 it hits anyone in a 30 ft radius

at level-20 you can use this 3 times and can be regained again after a short or long rest