1. This doesn't feel like a red card to me. Blue's had numerous cards, albeit none particularly recently, that touch upon this idea. See Intervene, Counfound, and the Hydromorph creatures.
2. This doesn't feel like "martial arts" to me, as you described it. This is purely a metamagic effect. If you want it to be a martial arts kind of card, it should be a combat trick.
3. This is undercosted for what it does. It's taking an ability that has heretofore belonged to blue and is giving it to red, but better. Unlike confound, this gets to counter spells that also target
you. and instead of getting to draw a card, you get to deal 3 damage -- all at the same price of 2 mana. If you keep this idea, the card needs to cost more.
Before I can make any really meaningful suggestions, I need to know exactly where you want to go with this. The card, as-is, doesn't work. You can keep two out of three: colour, effect, mana cost. If you want to lose the low mana cost, this may be workable as-is. If you want to change the effect to something more combat oriented, the colour and the mana cost can stay where they are (assuming you come up with a combat trick appropriate at that mana cost.) If you want to change the colour of this, well, you'll need to change the effect a little bit too. Even at


, this effect may be undercosted (see Suffocating Blast.)