I don't think I will surprise anyone with the view that Sonic Rifle is going to be a huge card for solo players, almost up there with Under Surveillance. For heroes who like to change form a lot (She-Hulk, Ms. Marvel) it immediately adds a ton of consistency compared to Concussive Blow (which in my opinion was already a pretty good card). Two copies seem like an auto-include. For heroes who switch less often it still has the immense benefit that the second charge can sit in play until you need it, giving you much more control and security about the switch that you do make. One copy will be a fantastic investment.
Restricted. Uses (2 charge counters).
Hero Action: Exhaust Sonic Rifle and remove 1 charge counter from it → confuse an enemy (deal 3 damage to that enemy instead if it is already confused).
Justice gets a weapon! Yeah. Although, I would like a Justice corollary to Jarnbjorn that does extra thwart for a mental, but this will do for now. Pay three to get two confusion is much better than three for one confuse in Concussive Blow. This gives you more control over the villain for flipping to AE or even use it confuse both villain and high scheming minion who keeps hanging around.
I'm a bit surprised no one mentioned Iron Man yet:
- it's a tech so it helps to have sooner a hand limit of 7,
- once you have used the last charge it goes in your discard and Pepper Potts give you a mental resource for your Boot, to get the aerial trait,
- once in alter-ego form, you get it back in your hand with Stark tower.