Could it be Pyke's new ult?

Pyke's teaser showed me something weird . His could be like Fizz's one , But instaed of thowing out an AP skillshot that gets bigger by the distance it travels with a "shark" at the end , it would be the underwater knife (from the teaser , Aoe very hard to land on champs) and when it would hit , Pike will summon the beast killed him and "drown" the enemy champion ( and 1 hit-ko with it)? Or maybe it would be an point and click ult that can root and deal a lot of damage?