Custom Magic Card Sudden Sliver

Before I start, I have permission from to use his artwork named 'A Sliver', which can be viewed here: [link] ; meaning that he is the creator of the artwork, he is entitled to rights to the artwork, as it is his artwork, however, he gave me permission to use it in this deviation.

When I seen artwork of a Sliver, it reminded me of a Sliver suddenly jumping into a time rift. With this, I came up with an idea to create a custom Sliver that had Split Second and gave Sliver spells Split Second. I chose Green and Blue, because they seemed like they would be the proper dual color to do this. The rarit yof this card of course would be Mythic Rare if it had a symbol, as Sliver spells having Split Second would be very harsh.