New champion, Shuratra, Will of the sands

I recently had an idea for a fighter tank champion that is built to be played as a mid laner focused on high damage gap closers and high sustainability. His passive would be called Nomad where Shuratra leaves a trail of sand behind him that not only increases the movement speed of Allies in the trail but also synergies with all of his abilities, the sand left by his passive is permanent making his late game very strong, his Q is called entomb where Shuratra sucks an enemy or allied champion under ground dealing 90-120-150-180-250+60%AD and stunning them and making them I targetable for up to 4 seconds (Scaling with level.) this ability only works to enemy's or allies standing in the path o sand left by his passive. Shuratra's w is sandstorm, where shuratra surrounds himself with a sandstorm giving his a bonus 40-50-60-80-100 movement speed and dealing 20% of his AD to enemy units and champions around him for 10 seconds. His E blade of the sands created a massive sword made of sand behind him giving him an extra 100 attack range and dealing a bonus 60% of his AD as physical damage. His ultimate is called Maw of the sands, where shuratra creates a massive hole in the ground where the is enough sand to create one dealing 80-100-120% AD to enemies standing in the circle for up to 5 seconds, the damage is doubled to enemies submerged by his Q and his starting stats are 659 health and he does not use mana. Please give me an honest opinion of what you think of this champion idea and any changes I should make to his kit If riot does decide to at least think about adding him to the game, also his champion design would be similar to a mix between Garen and Azir and he would use a large 1 handed sword that would look slightly cracked and decayed