Here's my replacement design:
Again, whenever I replace a card design, I try to mimic how it would have been worded when the original was printed.
This is a counterspell with X in its cost. There's already another one in Alpha in the form of Spell Blast. Counterspell is the spell that counters anything, and Blue Elemental Blast counters specifically red spells as a mirror to Red Elemental Blast. With this in mind, I chose to go with a counterspell that is conditional and dependent upon a certain element to be true, like Essence Scatter is.
Also, for those who don't know, I only choose designs that haven't been done before even up until now, to keep things interesting. Otherwise, I could easily just choose Mana Leak's design, for example.
Lastly, note that the name "Prevent Interruption" is a clever wordplay that doesn't state that you're preventing an interruption - because that usually wouldn't be true since both card types of instants and interruptions exists - but states that you're casting a "prevent" interruption. This means it refers to itself as an Interrupt.
But it also means that it's preventing an interruption during your turn.
I was too scared to cost this at U. Doesn't matter, though. Development would cost it appropriately.