I believe it would be polyphyletic.
Polyphyletic groups are formed when two lineages convergently evolve similar character states. Organisms classified into the same polyphyletic group share phenetic homoplasies as opposed to homologies. The key difference between paraphyletic and polyphyletic groups is that paraphyletic contain their common ancestor, whereas polyphyletic groups do not.
I think it would be 50% because it could land on heads just as much as it lands on tails. its a even chance it could land on whichever it chooses to.
Because of its ability to form large complex and diverse molecules