Move water, sure. Cause a tsunami, sure. Cause a global flood, no. Especially not one that puts Everest under water. There isn't enough water on Earth for that.
Somehow Mt. Everest is filled with fossilized marine shells.
As it should be since that land was below the ocean when the Indian plate crashed into the Asian plate. This was far back, like the timeframes it takes for things to fossilize.