ghost from the past yugioh booster box ghosts and to top it all off Ghosts from the Past Display

Looking on the type line, we can see that he's a creature, and his specific creature type is "Troll Shaman"

The death trigger for your insects is odd, but if you run mainly creatures and lands like many green decks, Zask makes mill two look a lot like draw two. #20

You can only play cards from the top of your deck when youd normally be allowed to play them

The trash needs targets before you can generate Rush attacks

Tana makes plenty of tokens for Tevesh to sacrifice, and the color combination gives you access to great token cards like Bitterblossom and Craterhoof Behemoth

Now that we left the Kaladesh days of cascading threats, almost none of the creatures in Standard really are, except Niv