Cellar door

[Double-O-Scotch]

{Mistveil plains} and {cellar door}. Just keep making zombie tokens...lol

[Mothaelon]

I think cellar doors token effect is a mana cost of its own, so putting a card on to bottom of your deck and it meeting the requirements, but if you disnt activate the ability of door, wouldn't yield you a token.

Or at least that's the way I see it.