Kamikaze: Well... I can either have 3/1 for 4 Fire, what is a pretty bad deal, or a 10/1 that dies after a single attack for 6 Fire, what is also a bad deal. Boost the stats of this thing up.
Greed: Energies? Also, I guess it is pretty alright, actually.
Reality: Immaterial creatures will avoid the cast of Reality, so in the end this card does nothing.
Energy Break: A particularly good card concept, although a bit costly for what it does. I'd drop the cost down a bit, like to 3-4.
Convert: So, now, not only I can get a copy of the enemy's creature for less than Parallel Universe costs, but also remove the original creature in the same card? Either make the convertion last like 2-3 turns or drop the idea, it's way too strong.