Pokemon that only saw serious play AFTER the generation ended

Do always find it insersting when a pokemon tha was largely ignored by competitive players ends up rising much later.

In generation 6 Cofagrius while not perfect has been seeing players use it more for its ability as a disruptor being wil-o, T-spikes on a pokemon that also naturally blocks spin with Mummy being able to heavily restrict various pokemon such as a regenerator tornadus or pure power mega medicham