Zadun, Imir Imir's Chosen

This spell can not be countered.
Hexproof
At the beginning of your upkeep, create a token
that's a copy of Zadun, Imir Imir's Chosen,
except it isn't legendary and doesn't have this
ability.
{u}: Sacrifice this creature. Draw a card.
"I've killed Zadun seventy-eight times. To be honest,
it gets old after a while."
-Erax, to Zeven Dal