Eternatus, from the Heavens

Flying
When Eternatus, from the Heavens enters the battlefield,all other creatures get a +1/+1 counter.
Instants and sorceries you cast cost {1} less to cast.
On your turn, if Eternatus, from the Heavens is targeted by three or more instants or sorceries, transform it.
"It was inside a meteorite that fell 20,000 years ago.
There seems to be a connection between this Pokemon
and the Dynamax phenomenon."